15321312254 has 32 divisors (see below), whose sum is σ = 24536584800. Its totient is φ = 7150187520.

The previous prime is 15321312211. The next prime is 15321312289. The reversal of 15321312254 is 45221312351.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2329082 + ... + 2335650.

It is an arithmetic number, because the mean of its divisors is an integer number (766768275).

Almost surely, 2^15321312254 is an apocalyptic number.

15321312254 is a deficient number, since it is larger than the sum of its proper divisors (9215272546).

15321312254 is a wasteful number, since it uses less digits than its factorization.

15321312254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7148.

The product of its digits is 7200, while the sum is 29.

The spelling of 15321312254 in words is "fifteen billion, three hundred twenty-one million, three hundred twelve thousand, two hundred fifty-four".