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90015364497 = 31719131709123
BaseRepresentation
bin101001111010101010…
…1010111010110010001
322121100022210022020210
41103311111113112101
52433322413130442
6105204045354333
76334443655002
oct1236525272621
9277308708223
1090015364497
11351a2365723
1215541b689a9
1386470717b6
1444dcd7b1a9
15251c8b419c
hex14f5557591

90015364497 has 32 divisors (see below), whose sum is σ = 134790289920. Its totient is φ = 53099055360.

The previous prime is 90015364469. The next prime is 90015364499. The reversal of 90015364497 is 79446351009.

It is not a de Polignac number, because 90015364497 - 26 = 90015364433 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (90015364499) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227623 + ... + 481500.

It is an arithmetic number, because the mean of its divisors is an integer number (4212196560).

Almost surely, 290015364497 is an apocalyptic number.

It is an amenable number.

90015364497 is a deficient number, since it is larger than the sum of its proper divisors (44774925423).

90015364497 is a wasteful number, since it uses less digits than its factorization.

90015364497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709293.

The product of its (nonzero) digits is 816480, while the sum is 48.

The spelling of 90015364497 in words is "ninety billion, fifteen million, three hundred sixty-four thousand, four hundred ninety-seven".

Divisors: 1 3 17 19 51 57 131 323 393 969 2227 2489 6681 7467 42313 126939 709123 2127369 12055091 13473337 36165273 40420011 92895113 229046729 278685339 687140187 1579216921 1765007147 4737650763 5295021441 30005121499 90015364497