10691557960 has 16 divisors (see below), whose sum is σ = 24056005500. Its totient is φ = 4276623168.

The previous prime is 10691557957. The next prime is 10691557967. The reversal of 10691557960 is 6975519601.

It can be written as a sum of positive squares in 2 ways, for example, as 9895076676 + 796481284 = 99474^2 + 28222^2 .

It is a super-2 number, since 2×10691557960² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10691557967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133644435 + ... + 133644514.

Almost surely, 2^10691557960 is an apocalyptic number.

10691557960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10691557960 is an abundant number, since it is smaller than the sum of its proper divisors (13364447540).

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

10691557960 is a wasteful number, since it uses less digits than its factorization.

10691557960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267288960 (or 267288956 counting only the distinct ones).

The product of its (nonzero) digits is 510300, while the sum is 49.

The spelling of 10691557960 in words is "ten billion, six hundred ninety-one million, five hundred fifty-seven thousand, nine hundred sixty".