656437148862 has 64 divisors (see below), whose sum is σ = 1464700520448. Its totient is φ = 194455404000.

The previous prime is 656437148803. The next prime is 656437148863. The reversal of 656437148862 is 268841734656.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 656437148796 and 656437148805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656437148863) 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, 12687 + ... + 1145877.

It is an arithmetic number, because the mean of its divisors is an integer number (22885945632).

Almost surely, 2^656437148862 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 656437148862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (732350260224).

656437148862 is an abundant number, since it is smaller than the sum of its proper divisors (808263371586).

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

656437148862 is a wasteful number, since it uses less digits than its factorization.

656437148862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133405.

The product of its digits is 46448640, while the sum is 60.

The spelling of 656437148862 in words is "six hundred fifty-six billion, four hundred thirty-seven million, one hundred forty-eight thousand, eight hundred sixty-two".