51646655046 has 32 divisors (see below), whose sum is σ = 118071952128. Its totient is φ = 14753380320.

The previous prime is 51646655041. The next prime is 51646655059. The reversal of 51646655046 is 64055664615.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51646654986 and 51646655004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51646655041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111741 + ... + 340263.

It is an arithmetic number, because the mean of its divisors is an integer number (3689748504).

Almost surely, 2^51646655046 is an apocalyptic number.

51646655046 is an abundant number, since it is smaller than the sum of its proper divisors (66425297082).

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

51646655046 is a wasteful number, since it uses less digits than its factorization.

51646655046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233916.

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 51646655046 in words is "fifty-one billion, six hundred forty-six million, six hundred fifty-five thousand, forty-six".