40740311961 has 16 divisors (see below), whose sum is σ = 60361206400. Its totient is φ = 27157873104.

The previous prime is 40740311957. The next prime is 40740311971. The reversal of 40740311961 is 16911304704.

It is not a de Polignac number, because 40740311961 - 2² = 40740311957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40740311921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290415 + ... + 407211.

It is an arithmetic number, because the mean of its divisors is an integer number (3772575400).

Almost surely, 2^40740311961 is an apocalyptic number.

It is an amenable number.

40740311961 is a deficient number, since it is larger than the sum of its proper divisors (19620894439).

40740311961 is a wasteful number, since it uses less digits than its factorization.

40740311961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129725 (or 129719 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The spelling of 40740311961 in words is "forty billion, seven hundred forty million, three hundred eleven thousand, nine hundred sixty-one".