40749710960639 has 4 divisors (see below), whose sum is σ = 40750226291424. Its totient is φ = 40749195629856.

The previous prime is 40749710960599. The next prime is 40749710960669. The reversal of 40749710960639 is 93606901794704.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40749710960639 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 (40749710960669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257546762 + ... + 257704935.

It is an arithmetic number, because the mean of its divisors is an integer number (10187556572856).

Almost surely, 2^{40749710960639} is an apocalyptic number.

40749710960639 is a deficient number, since it is larger than the sum of its proper divisors (515330785).

40749710960639 is an equidigital number, since it uses as much as digits as its factorization.

40749710960639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515330784.

The product of its (nonzero) digits is 61725888, while the sum is 65.

The spelling of 40749710960639 in words is "forty trillion, seven hundred forty-nine billion, seven hundred ten million, nine hundred sixty thousand, six hundred thirty-nine".