15213252551 has 16 divisors (see below), whose sum is σ = 17436976128. Its totient is φ = 13002184800.

The previous prime is 15213252547. The next prime is 15213252583. The reversal of 15213252551 is 15525231251.

It is a cyclic number.

It is not a de Polignac number, because 15213252551 - 2² = 15213252547 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15213252521) 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, 6848621 + ... + 6850841.

It is an arithmetic number, because the mean of its divisors is an integer number (1089811008).

Almost surely, 2^15213252551 is an apocalyptic number.

15213252551 is a deficient number, since it is larger than the sum of its proper divisors (2223723577).

15213252551 is a wasteful number, since it uses less digits than its factorization.

15213252551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4622.

The product of its digits is 15000, while the sum is 32.

The spelling of 15213252551 in words is "fifteen billion, two hundred thirteen million, two hundred fifty-two thousand, five hundred fifty-one".