40657477013 has 4 divisors (see below), whose sum is σ = 40663907340. Its totient is φ = 40651046688.

The previous prime is 40657476931. The next prime is 40657477019. The reversal of 40657477013 is 31077475604.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20608899364 + 20048577649 = 143558^2 + 141593^2 .

It is a cyclic number.

It is not a de Polignac number, because 40657477013 - 2⁸ = 40657476757 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 (40657477019) 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, 3205670 + ... + 3218327.

It is an arithmetic number, because the mean of its divisors is an integer number (10165976835).

Almost surely, 2^40657477013 is an apocalyptic number.

It is an amenable number.

40657477013 is a deficient number, since it is larger than the sum of its proper divisors (6430327).

40657477013 is an equidigital number, since it uses as much as digits as its factorization.

40657477013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6430326.

The product of its (nonzero) digits is 493920, while the sum is 44.

The spelling of 40657477013 in words is "forty billion, six hundred fifty-seven million, four hundred seventy-seven thousand, thirteen".