10645172780 has 24 divisors (see below), whose sum is σ = 24387123600. Its totient is φ = 3870971840.

The previous prime is 10645172773. The next prime is 10645172819. The reversal of 10645172780 is 8727154601.

It is a super-2 number, since 2×10645172780² (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 7 ways as a sum of consecutive naturals, for example, 24193355 + ... + 24193794.

It is an arithmetic number, because the mean of its divisors is an integer number (1016130150).

Almost surely, 2^10645172780 is an apocalyptic number.

10645172780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10645172780 is an abundant number, since it is smaller than the sum of its proper divisors (13741950820).

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

10645172780 is a wasteful number, since it uses less digits than its factorization.

10645172780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48387169 (or 48387167 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 41.

The spelling of 10645172780 in words is "ten billion, six hundred forty-five million, one hundred seventy-two thousand, seven hundred eighty".