42311906656 has 48 divisors (see below), whose sum is σ = 86234576400. Its totient is φ = 20412087808.

The previous prime is 42311906641. The next prime is 42311906657. The reversal of 42311906656 is 65660911324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42311906657) 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, 1370235 + ... + 1400773.

It is an arithmetic number, because the mean of its divisors is an integer number (1796553675).

Almost surely, 2^42311906656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42311906656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43117288200).

42311906656 is an abundant number, since it is smaller than the sum of its proper divisors (43922669744).

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

42311906656 is a wasteful number, since it uses less digits than its factorization.

42311906656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32071 (or 32063 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 42311906656 in words is "forty-two billion, three hundred eleven million, nine hundred six thousand, six hundred fifty-six".