15621005080 has 64 divisors (see below), whose sum is σ = 35568046080. Its totient is φ = 6174000000.

The previous prime is 15621005077. The next prime is 15621005129. The reversal of 15621005080 is 8050012651.

15621005080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1268955 + ... + 1281205.

It is an arithmetic number, because the mean of its divisors is an integer number (555750720).

Almost surely, 2^15621005080 is an apocalyptic number.

15621005080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15621005080 is an abundant number, since it is smaller than the sum of its proper divisors (19947041000).

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

15621005080 is a wasteful number, since it uses less digits than its factorization.

15621005080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12640 (or 12636 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

The spelling of 15621005080 in words is "fifteen billion, six hundred twenty-one million, five thousand, eighty".