56694865736405 has 8 divisors (see below), whose sum is σ = 73267211105592. Its totient is φ = 41866977774528.

The previous prime is 56694865736401. The next prime is 56694865736437. The reversal of 56694865736405 is 50463756849665.

It can be written as a sum of positive squares in 4 ways, for example, as 1712729716369 + 54982136020036 = 1308713^2 + 7414994^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56694865736405 - 2² = 56694865736401 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 (56694865736401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436114351754 + ... + 436114351883.

It is an arithmetic number, because the mean of its divisors is an integer number (9158401388199).

Almost surely, 2^{56694865736405} is an apocalyptic number.

It is an amenable number.

56694865736405 is a deficient number, since it is larger than the sum of its proper divisors (16572345369187).

56694865736405 is a wasteful number, since it uses less digits than its factorization.

56694865736405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872228703655.

The product of its (nonzero) digits is 3919104000, while the sum is 74.

The spelling of 56694865736405 in words is "fifty-six trillion, six hundred ninety-four billion, eight hundred sixty-five million, seven hundred thirty-six thousand, four hundred five".