15500228678 has 48 divisors (see below), whose sum is σ = 27129558528. Its totient is φ = 6574497600.

The previous prime is 15500228677. The next prime is 15500228683. The reversal of 15500228678 is 87682200551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15500228677) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 841475 + ... + 859697.

It is an arithmetic number, because the mean of its divisors is an integer number (565199136).

Almost surely, 2^15500228678 is an apocalyptic number.

15500228678 is a deficient number, since it is larger than the sum of its proper divisors (11629329850).

15500228678 is a wasteful number, since it uses less digits than its factorization.

15500228678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18341 (or 18300 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 44.

The spelling of 15500228678 in words is "fifteen billion, five hundred million, two hundred twenty-eight thousand, six hundred seventy-eight".