10644295590 has 64 divisors (see below), whose sum is σ = 28509995520. Its totient is φ = 2825958240.

The previous prime is 10644295579. The next prime is 10644295609. The reversal of 10644295590 is 9559244601.

10644295590 is a `hidden beast` number, since 10 + 6 + 4 + 42 + 9 + 5 + 590 = 666.

It is a super-2 number, since 2×10644295590² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25546 + ... + 148125.

It is an arithmetic number, because the mean of its divisors is an integer number (445468680).

Almost surely, 2^10644295590 is an apocalyptic number.

10644295590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10644295590 is an abundant number, since it is smaller than the sum of its proper divisors (17865699930).

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

10644295590 is a wasteful number, since it uses less digits than its factorization.

10644295590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173914 (or 173908 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The spelling of 10644295590 in words is "ten billion, six hundred forty-four million, two hundred ninety-five thousand, five hundred ninety".