10491252808 has 8 divisors (see below), whose sum is σ = 19671099030. Its totient is φ = 5245626400.

The previous prime is 10491252797. The next prime is 10491252809. The reversal of 10491252808 is 80825219401.

It can be written as a sum of positive squares in only one way, i.e., 9908609764 + 582643044 = 99542^2 + 24138^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×10491252808² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10491252809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655703293 + ... + 655703308.

Almost surely, 2^10491252808 is an apocalyptic number.

It is an amenable number.

10491252808 is a deficient number, since it is larger than the sum of its proper divisors (9179846222).

10491252808 is a wasteful number, since it uses less digits than its factorization.

10491252808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311406607 (or 1311406603 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 40.

The spelling of 10491252808 in words is "ten billion, four hundred ninety-one million, two hundred fifty-two thousand, eight hundred eight".