51066165051606 has 64 divisors (see below), whose sum is σ = 110062103187456. Its totient is φ = 15749378620800.

The previous prime is 51066165051479. The next prime is 51066165051641. The reversal of 51066165051606 is 60615056166015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6371500 + ... + 11946896.

It is an arithmetic number, because the mean of its divisors is an integer number (1719720362304).

Almost surely, 2^{51066165051606} is an apocalyptic number.

51066165051606 is an abundant number, since it is smaller than the sum of its proper divisors (58995938135850).

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

51066165051606 is a wasteful number, since it uses less digits than its factorization.

51066165051606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5577597.

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 51066165051606 in words is "fifty-one trillion, sixty-six billion, one hundred sixty-five million, fifty-one thousand, six hundred six".