10646431982520 has 64 divisors (see below), whose sum is σ = 31939623540000. Its totient is φ = 2839019409408.

The previous prime is 10646431982503. The next prime is 10646431982533. The reversal of 10646431982520 is 2528913464601.

It is a happy number.

It is a super-2 number, since 2×10646431982520² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12926416 + ... + 13725344.

Almost surely, 2^{10646431982520} is an apocalyptic number.

10646431982520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10646431982520 is an abundant number, since it is smaller than the sum of its proper divisors (21293191557480).

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

10646431982520 is a wasteful number, since it uses less digits than its factorization.

10646431982520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909992 (or 909988 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 51.

The spelling of 10646431982520 in words is "ten trillion, six hundred forty-six billion, four hundred thirty-one million, nine hundred eighty-two thousand, five hundred twenty".