2056790617521 has 8 divisors (see below), whose sum is σ = 2742448756800. Its totient is φ = 1371163111632.

The previous prime is 2056790617517. The next prime is 2056790617559. The reversal of 2056790617521 is 1257160976502.

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

It is not a de Polignac number, because 2056790617521 - 2² = 2056790617517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2056790637521) 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, 7501221 + ... + 7770578.

It is an arithmetic number, because the mean of its divisors is an integer number (342806094600).

Almost surely, 2^{2056790617521} is an apocalyptic number.

It is an amenable number.

2056790617521 is a deficient number, since it is larger than the sum of its proper divisors (685658139279).

2056790617521 is a wasteful number, since it uses less digits than its factorization.

2056790617521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15316695.

The product of its (nonzero) digits is 1587600, while the sum is 51.

The spelling of 2056790617521 in words is "two trillion, fifty-six billion, seven hundred ninety million, six hundred seventeen thousand, five hundred twenty-one".