656011787112 has 384 divisors, whose sum is σ = 2108985016320. Its totient is φ = 189213408000.

The previous prime is 656011787083. The next prime is 656011787113. The reversal of 656011787112 is 211787110656.

656011787112 is a `hidden beast` number, since 6 + 560 + 1 + 1 + 7 + 8 + 71 + 12 = 666.

It is not an unprimeable number, because it can be changed into a prime (656011787113) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 40429033 + ... + 40445255.

It is an arithmetic number, because the mean of its divisors is an integer number (5492148480).

Almost surely, 2^656011787112 is an apocalyptic number.

656011787112 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 656011787112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1054492508160).

656011787112 is an abundant number, since it is smaller than the sum of its proper divisors (1452973229208).

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

656011787112 is a wasteful number, since it uses less digits than its factorization.

656011787112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16347 (or 16331 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 45.

Adding to 656011787112 its reverse (211787110656), we get a palindrome (867798897768).

The spelling of 656011787112 in words is "six hundred fifty-six billion, eleven million, seven hundred eighty-seven thousand, one hundred twelve".