10645256032020 has 72 divisors (see below), whose sum is σ = 32292224030976. Its totient is φ = 2838593045952.

The previous prime is 10645256031967. The next prime is 10645256032027. The reversal of 10645256032020 is 2023065254601.

10645256032020 is a `hidden beast` number, since 1 + 0 + 6 + 4 + 5 + 2 + 5 + 603 + 20 + 20 = 666.

It is a super-2 number, since 2×10645256032020² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10645256032027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2157729 + ... + 5093751.

Almost surely, 2^{10645256032020} is an apocalyptic number.

10645256032020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10645256032020 is an abundant number, since it is smaller than the sum of its proper divisors (21646967998956).

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

10645256032020 is a wasteful number, since it uses less digits than its factorization.

10645256032020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2956181 (or 2956176 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 10645256032020 in words is "ten trillion, six hundred forty-five billion, two hundred fifty-six million, thirty-two thousand, twenty".