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10999191840 = 2535713318123
BaseRepresentation
bin10100011111001101…
…00101100100100000
31001101112220211122120
422033212211210200
5140011243114330
65015234504240
7536366405460
oct121746454440
931345824576
1010999191840
11473483669a
12216b735080
131063a03850
14764b3dba0
1544597ec10
hex28f9a5920

10999191840 has 384 divisors, whose sum is σ = 44024020992. Its totient is φ = 2245570560.

The previous prime is 10999191823. The next prime is 10999191857. The reversal of 10999191840 is 4819199901.

It is an interprime number because it is at equal distance from previous prime (10999191823) and next prime (10999191857).

It is a super-2 number, since 2×109991918402 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1350019 + ... + 1358141.

It is an arithmetic number, because the mean of its divisors is an integer number (114645888).

Almost surely, 210999191840 is an apocalyptic number.

10999191840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10999191840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22012010496).

10999191840 is an abundant number, since it is smaller than the sum of its proper divisors (33024829152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10999191840 is a wasteful number, since it uses less digits than its factorization.

10999191840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8192 (or 8184 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 51.

The spelling of 10999191840 in words is "ten billion, nine hundred ninety-nine million, one hundred ninety-one thousand, eight hundred forty".