56720606515 has 8 divisors (see below), whose sum is σ = 68157589968. Its totient is φ = 45314577120.

The previous prime is 56720606497. The next prime is 56720606531. The reversal of 56720606515 is 51560602765.

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

It is not a de Polignac number, because 56720606515 - 2¹³ = 56720598323 is a prime.

It is a Duffinian 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, 7734481 + ... + 7741810.

It is an arithmetic number, because the mean of its divisors is an integer number (8519698746).

Almost surely, 2^56720606515 is an apocalyptic number.

56720606515 is a deficient number, since it is larger than the sum of its proper divisors (11436983453).

56720606515 is a wasteful number, since it uses less digits than its factorization.

56720606515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15477029.

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 56720606515 in words is "fifty-six billion, seven hundred twenty million, six hundred six thousand, five hundred fifteen".