56390100689 has 8 divisors (see below), whose sum is σ = 60729645480. Its totient is φ = 52050819456.

The previous prime is 56390100671. The next prime is 56390100691. The reversal of 56390100689 is 98600109365.

It can be written as a sum of positive squares in 4 ways, for example, as 3440409025 + 52949691664 = 58655^2 + 230108^2 .

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 56390100689 - 2⁸ = 56390100433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56390100289) 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, 800669 + ... + 868245.

It is an arithmetic number, because the mean of its divisors is an integer number (7591205685).

Almost surely, 2^56390100689 is an apocalyptic number.

It is an amenable number.

56390100689 is a deficient number, since it is larger than the sum of its proper divisors (4339544791).

56390100689 is a wasteful number, since it uses less digits than its factorization.

56390100689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131779.

The product of its (nonzero) digits is 349920, while the sum is 47.

The spelling of 56390100689 in words is "fifty-six billion, three hundred ninety million, one hundred thousand, six hundred eighty-nine".