56851309261 has 8 divisors (see below), whose sum is σ = 56906670240. Its totient is φ = 56795976432.

The previous prime is 56851309247. The next prime is 56851309279. The reversal of 56851309261 is 16290315865.

56851309261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 56851309261 - 2⁷ = 56851309133 is a prime.

It is a super-2 number, since 2×56851309261² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56851303261) 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, 6994746 + ... + 7002868.

It is an arithmetic number, because the mean of its divisors is an integer number (7113333780).

Almost surely, 2^56851309261 is an apocalyptic number.

It is an amenable number.

56851309261 is a deficient number, since it is larger than the sum of its proper divisors (55360979).

56851309261 is a wasteful number, since it uses less digits than its factorization.

56851309261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14075.

The product of its (nonzero) digits is 388800, while the sum is 46.

The spelling of 56851309261 in words is "fifty-six billion, eight hundred fifty-one million, three hundred nine thousand, two hundred sixty-one".