656241733140 has 48 divisors (see below), whose sum is σ = 2099973547392. Its totient is φ = 149998110336.

The previous prime is 656241733127. The next prime is 656241733157. The reversal of 656241733140 is 41337142656.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 656241733092 and 656241733101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 781239739 + ... + 781240578.

It is an arithmetic number, because the mean of its divisors is an integer number (43749448904).

Almost surely, 2^656241733140 is an apocalyptic number.

656241733140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

656241733140 is an abundant number, since it is smaller than the sum of its proper divisors (1443731814252).

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

656241733140 is a wasteful number, since it uses less digits than its factorization.

656241733140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562480336 (or 1562480334 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 42.

Adding to 656241733140 its reverse (41337142656), we get a palindrome (697578875796).

The spelling of 656241733140 in words is "six hundred fifty-six billion, two hundred forty-one million, seven hundred thirty-three thousand, one hundred forty".