40861531437 has 16 divisors (see below), whose sum is σ = 54617716608. Its totient is φ = 27173260800.

The previous prime is 40861531433. The next prime is 40861531523. The reversal of 40861531437 is 73413516804.

It is a happy number.

40861531437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40861531437 - 2² = 40861531433 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40861531433) 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, 2340613 + ... + 2358005.

It is an arithmetic number, because the mean of its divisors is an integer number (3413607288).

Almost surely, 2^40861531437 is an apocalyptic number.

It is an amenable number.

40861531437 is a deficient number, since it is larger than the sum of its proper divisors (13756185171).

40861531437 is a wasteful number, since it uses less digits than its factorization.

40861531437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19300.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 40861531437 in words is "forty billion, eight hundred sixty-one million, five hundred thirty-one thousand, four hundred thirty-seven".