15626644040 has 32 divisors (see below), whose sum is σ = 40182799680. Its totient is φ = 5357706432.

The previous prime is 15626644037. The next prime is 15626644079. The reversal of 15626644040 is 4044662651.

15626644040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 15626643985 and 15626644003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27904442 + ... + 27905001.

It is an arithmetic number, because the mean of its divisors is an integer number (1255712490).

Almost surely, 2^15626644040 is an apocalyptic number.

15626644040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15626644040 is an abundant number, since it is smaller than the sum of its proper divisors (24556155640).

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

15626644040 is a wasteful number, since it uses less digits than its factorization.

15626644040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55809461 (or 55809457 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 15626644040 in words is "fifteen billion, six hundred twenty-six million, six hundred forty-four thousand, forty".