40591013664 has 48 divisors (see below), whose sum is σ = 107140138560. Its totient is φ = 13455578880.

The previous prime is 40591013609. The next prime is 40591013681. The reversal of 40591013664 is 46631019504.

40591013664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1150644 + ... + 1185395.

It is an arithmetic number, because the mean of its divisors is an integer number (2232086220).

Almost surely, 2^40591013664 is an apocalyptic number.

It is an amenable number.

40591013664 is an abundant number, since it is smaller than the sum of its proper divisors (66549124896).

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

40591013664 is a wasteful number, since it uses less digits than its factorization.

40591013664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2336233 (or 2336225 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 40591013664 in words is "forty billion, five hundred ninety-one million, thirteen thousand, six hundred sixty-four".