40340312451 has 12 divisors (see below), whose sum is σ = 58278008880. Its totient is φ = 26889540720.

The previous prime is 40340312447. The next prime is 40340312471. The reversal of 40340312451 is 15421304304.

It is a happy number.

40340312451 is a `hidden beast` number, since 4 + 0 + 340 + 312 + 4 + 5 + 1 = 666.

It is not a de Polignac number, because 40340312451 - 2² = 40340312447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40340312471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 268896 + ... + 391133.

It is an arithmetic number, because the mean of its divisors is an integer number (4856500740).

Almost surely, 2^40340312451 is an apocalyptic number.

40340312451 is a deficient number, since it is larger than the sum of its proper divisors (17937696429).

40340312451 is a wasteful number, since it uses less digits than its factorization.

40340312451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666826 (or 666823 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 40340312451 its reverse (15421304304), we get a palindrome (55761616755).

The spelling of 40340312451 in words is "forty billion, three hundred forty million, three hundred twelve thousand, four hundred fifty-one".