40468556257 has 4 divisors (see below), whose sum is σ = 40469089536. Its totient is φ = 40468022980.

The previous prime is 40468556251. The next prime is 40468556279. The reversal of 40468556257 is 75265586404.

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 not a de Polignac number, because 40468556257 - 2²⁷ = 40334338529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40468556251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129193 + ... + 312454.

It is an arithmetic number, because the mean of its divisors is an integer number (10117272384).

Almost surely, 2^40468556257 is an apocalyptic number.

It is an amenable number.

40468556257 is a deficient number, since it is larger than the sum of its proper divisors (533279).

40468556257 is an equidigital number, since it uses as much as digits as its factorization.

40468556257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533278.

The product of its (nonzero) digits is 8064000, while the sum is 52.

The spelling of 40468556257 in words is "forty billion, four hundred sixty-eight million, five hundred fifty-six thousand, two hundred fifty-seven".