40404651531 has 8 divisors (see below), whose sum is σ = 53873872704. Its totient is φ = 26935932360.

The previous prime is 40404651523. The next prime is 40404651559. The reversal of 40404651531 is 13515640404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40404651531 - 2³ = 40404651523 is a prime.

It is a super-2 number, since 2×40404651531² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40404651492 and 40404651501.

It is not an unprimeable number, because it can be changed into a prime (40404651631) 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, 146560 + ... + 319826.

It is an arithmetic number, because the mean of its divisors is an integer number (6734234088).

Almost surely, 2^40404651531 is an apocalyptic number.

40404651531 is a deficient number, since it is larger than the sum of its proper divisors (13469221173).

40404651531 is a wasteful number, since it uses less digits than its factorization.

40404651531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251001.

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 40404651531 in words is "forty billion, four hundred four million, six hundred fifty-one thousand, five hundred thirty-one".