15550601166 has 24 divisors (see below), whose sum is σ = 34603591464. Its totient is φ = 5043438000.

The previous prime is 15550601137. The next prime is 15550601173. The reversal of 15550601166 is 66110605551.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15550601166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11673960 + ... + 11675291.

It is an arithmetic number, because the mean of its divisors is an integer number (1441816311).

Almost surely, 2^15550601166 is an apocalyptic number.

15550601166 is an abundant number, since it is smaller than the sum of its proper divisors (19052990298).

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

15550601166 is a wasteful number, since it uses less digits than its factorization.

15550601166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23349296 (or 23349293 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 15550601166 in words is "fifteen billion, five hundred fifty million, six hundred one thousand, one hundred sixty-six".