15551606100 has 72 divisors (see below), whose sum is σ = 45612427840. Its totient is φ = 4090279680.

The previous prime is 15551606093. The next prime is 15551606117. The reversal of 15551606100 is 160615551.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 333160 + ... + 376959.

Almost surely, 2^15551606100 is an apocalyptic number.

15551606100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15551606100 is an abundant number, since it is smaller than the sum of its proper divisors (30060821740).

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

15551606100 is a wasteful number, since it uses less digits than its factorization.

15551606100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710209 (or 710202 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 15551606100 in words is "fifteen billion, five hundred fifty-one million, six hundred six thousand, one hundred".