15630054550 has 72 divisors (see below), whose sum is σ = 33472279512. Its totient is φ = 5384448000.

The previous prime is 15630054533. The next prime is 15630054577. The reversal of 15630054550 is 5545003651.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 159190 + ... + 237910.

It is an arithmetic number, because the mean of its divisors is an integer number (464892771).

Almost surely, 2^15630054550 is an apocalyptic number.

15630054550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15630054550 is an abundant number, since it is smaller than the sum of its proper divisors (17842224962).

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

15630054550 is a wasteful number, since it uses less digits than its factorization.

15630054550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78782 (or 78758 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 34.

The spelling of 15630054550 in words is "fifteen billion, six hundred thirty million, fifty-four thousand, five hundred fifty".