51561006160606 has 8 divisors (see below), whose sum is σ = 77399792220960. Its totient is φ = 25761075420288.

The previous prime is 51561006160597. The next prime is 51561006160607. The reversal of 51561006160606 is 60606160016515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51561006160607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9713826691 + ... + 9713831998.

It is an arithmetic number, because the mean of its divisors is an integer number (9674974027620).

Almost surely, 2^{51561006160606} is an apocalyptic number.

51561006160606 is a deficient number, since it is larger than the sum of its proper divisors (25838786060354).

51561006160606 is a wasteful number, since it uses less digits than its factorization.

51561006160606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19427660018.

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 51561006160606 in words is "fifty-one trillion, five hundred sixty-one billion, six million, one hundred sixty thousand, six hundred six".