15015428064 has 144 divisors (see below), whose sum is σ = 52554089952. Its totient is φ = 3960105984.

The previous prime is 15015427997. The next prime is 15015428083. The reversal of 15015428064 is 46082451051.

It is a happy number.

15015428064 is a `hidden beast` number, since 1 + 50 + 1 + 542 + 8 + 0 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 260259 + ... + 312674.

It is an arithmetic number, because the mean of its divisors is an integer number (364958958).

Almost surely, 2^15015428064 is an apocalyptic number.

15015428064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

15015428064 is an abundant number, since it is smaller than the sum of its proper divisors (37538661888).

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

15015428064 is a wasteful number, since it uses less digits than its factorization.

15015428064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572969 (or 572958 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 15015428064 in words is "fifteen billion, fifteen million, four hundred twenty-eight thousand, sixty-four".