42310640656 has 80 divisors (see below), whose sum is σ = 92948336640. Its totient is φ = 18551998080.

The previous prime is 42310640639. The next prime is 42310640731. The reversal of 42310640656 is 65604601324.

It is a super-2 number, since 2×42310640656² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119151 + ... + 314353.

It is an arithmetic number, because the mean of its divisors is an integer number (1161854208).

Almost surely, 2^42310640656 is an apocalyptic number.

42310640656 is a gapful number since it is divisible by the number (46) 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 42310640656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46474168320).

42310640656 is an abundant number, since it is smaller than the sum of its proper divisors (50637695984).

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

42310640656 is a wasteful number, since it uses less digits than its factorization.

42310640656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195284 (or 195278 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 42310640656 in words is "forty-two billion, three hundred ten million, six hundred forty thousand, six hundred fifty-six".