10187408644 has 24 divisors (see below), whose sum is σ = 21573336960. Its totient is φ = 4109206656.

The previous prime is 10187408641. The next prime is 10187408669. The reversal of 10187408644 is 44680478101.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 10187408644.

It is not an unprimeable number, because it can be changed into a prime (10187408641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10700584 + ... + 10701535.

It is an arithmetic number, because the mean of its divisors is an integer number (898889040).

Almost surely, 2^10187408644 is an apocalyptic number.

10187408644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

10187408644 is an abundant number, since it is smaller than the sum of its proper divisors (11385928316).

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

10187408644 is a wasteful number, since it uses less digits than its factorization.

10187408644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21402147 (or 21402145 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The spelling of 10187408644 in words is "ten billion, one hundred eighty-seven million, four hundred eight thousand, six hundred forty-four".