56999099965 has 8 divisors (see below), whose sum is σ = 68400201528. Its totient is φ = 45598425600.

The previous prime is 56999099959. The next prime is 56999099987.

It is a happy number.

56999099965 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 34105594329 + 22893505636 = 184677^2 + 151306^2 .

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

It is not a de Polignac number, because 56999099965 - 2³ = 56999099957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56999099891 and 56999099900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 467365 + ... + 576565.

It is an arithmetic number, because the mean of its divisors is an integer number (8550025191).

Almost surely, 2^56999099965 is an apocalyptic number.

It is an amenable number.

56999099965 is a deficient number, since it is larger than the sum of its proper divisors (11401101563).

56999099965 is a wasteful number, since it uses less digits than its factorization.

56999099965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213599.

The product of its (nonzero) digits is 478296900, while the sum is 76.

The spelling of 56999099965 in words is "fifty-six billion, nine hundred ninety-nine million, ninety-nine thousand, nine hundred sixty-five".