40426670957 has 4 divisors (see below), whose sum is σ = 40430221440. Its totient is φ = 40423120476.

The previous prime is 40426670951. The next prime is 40426670987. The reversal of 40426670957 is 75907662404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40426670957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40426670951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1758107 + ... + 1780952.

It is an arithmetic number, because the mean of its divisors is an integer number (10107555360).

Almost surely, 2^40426670957 is an apocalyptic number.

It is an amenable number.

40426670957 is a deficient number, since it is larger than the sum of its proper divisors (3550483).

40426670957 is a wasteful number, since it uses less digits than its factorization.

40426670957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3550482.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 40426670957 in words is "forty billion, four hundred twenty-six million, six hundred seventy thousand, nine hundred fifty-seven".