656051506012 has 24 divisors (see below), whose sum is σ = 1312173606240. Its totient is φ = 281149803840.

The previous prime is 656051505961. The next prime is 656051506013. The reversal of 656051506012 is 210605150656.

It is a super-2 number, since 2×656051506012² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656051506013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92539 + ... + 1149202.

It is an arithmetic number, because the mean of its divisors is an integer number (54673900260).

Almost surely, 2^656051506012 is an apocalyptic number.

It is an amenable number.

656051506012 is an abundant number, since it is smaller than the sum of its proper divisors (656122100228).

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

656051506012 is a wasteful number, since it uses less digits than its factorization.

656051506012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260621 (or 1260619 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 37.

Adding to 656051506012 its reverse (210605150656), we get a palindrome (866656656668).

The spelling of 656051506012 in words is "six hundred fifty-six billion, fifty-one million, five hundred six thousand, twelve".