51715201660606 has 64 divisors (see below), whose sum is σ = 95779037523456. Its totient is φ = 20646078745600.

The previous prime is 51715201660543. The next prime is 51715201660609. The reversal of 51715201660606 is 60606610251715.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51715201660609) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72964360 + ... + 73669723.

It is an arithmetic number, because the mean of its divisors is an integer number (1496547461304).

Almost surely, 2^{51715201660606} is an apocalyptic number.

51715201660606 is a deficient number, since it is larger than the sum of its proper divisors (44063835862850).

51715201660606 is a wasteful number, since it uses less digits than its factorization.

51715201660606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146634177.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 51715201660606 in words is "fifty-one trillion, seven hundred fifteen billion, two hundred one million, six hundred sixty thousand, six hundred six".