15215215054 has 32 divisors (see below), whose sum is σ = 25018148736. Its totient is φ = 6897385440.

The previous prime is 15215215051. The next prime is 15215215069. The reversal of 15215215054 is 45051251251.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15215215051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 591889 + ... + 617059.

It is an arithmetic number, because the mean of its divisors is an integer number (781817148).

Almost surely, 2^15215215054 is an apocalyptic number.

15215215054 is a deficient number, since it is larger than the sum of its proper divisors (9802933682).

15215215054 is a wasteful number, since it uses less digits than its factorization.

15215215054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25600.

The product of its (nonzero) digits is 10000, while the sum is 31.

The spelling of 15215215054 in words is "fifteen billion, two hundred fifteen million, two hundred fifteen thousand, fifty-four".