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990909909099 = 3211101499198599
BaseRepresentation
bin11100110101101101101…
…01010100100001101011
310111201201012210221222200
432122312311110201223
5112213340414042344
62035115010151243
7131406446153205
oct16326665244153
93451635727880
10990909909099
113522738a1080
12140065882523
1372599c64126
1435d6309d775
151ab986e1069
hexe6b6d5486b

990909909099 has 48 divisors (see below), whose sum is σ = 1580061600000. Its totient is φ = 593410824000.

The previous prime is 990909909097. The next prime is 990909909107.

990909909099 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 990909909099 - 21 = 990909909097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (990909909097) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4890202 + ... + 5088800.

It is an arithmetic number, because the mean of its divisors is an integer number (32917950000).

Almost surely, 2990909909099 is an apocalyptic number.

990909909099 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

990909909099 is a deficient number, since it is larger than the sum of its proper divisors (589151690901).

990909909099 is a wasteful number, since it uses less digits than its factorization.

990909909099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199216 (or 199213 counting only the distinct ones).

The product of its (nonzero) digits is 43046721, while the sum is 72.

The spelling of 990909909099 in words is "nine hundred ninety billion, nine hundred nine million, nine hundred nine thousand, ninety-nine".

Divisors: 1 3 9 11 33 99 101 303 499 909 1111 1497 3333 4491 5489 9999 16467 49401 50399 151197 198599 453591 554389 595797 1663167 1787391 2184589 4989501 6553767 19661301 20058499 60175497 99100901 180526491 220643489 297302703 661930467 891908109 1090109911 1985791401 3270329733 9810989199 10009191001 30027573003 90082719009 110101101011 330303303033 990909909099