40157337891 has 16 divisors (see below), whose sum is σ = 58414487040. Its totient is φ = 24336191520.

The previous prime is 40157337839. The next prime is 40157337893. The reversal of 40157337891 is 19873375104.

It is not a de Polignac number, because 40157337891 - 2¹⁴ = 40157321507 is a prime.

It is a super-2 number, since 2×40157337891² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40157337891.

It is not an unprimeable number, because it can be changed into a prime (40157337893) 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, 654361 + ... + 713093.

It is an arithmetic number, because the mean of its divisors is an integer number (3650905440).

Almost surely, 2^40157337891 is an apocalyptic number.

40157337891 is a deficient number, since it is larger than the sum of its proper divisors (18257149149).

40157337891 is a wasteful number, since it uses less digits than its factorization.

40157337891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79466.

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 40157337891 in words is "forty billion, one hundred fifty-seven million, three hundred thirty-seven thousand, eight hundred ninety-one".