56706156577 has 4 divisors (see below), whose sum is σ = 64807036096. Its totient is φ = 48605277060.

The previous prime is 56706156571. The next prime is 56706156613. The reversal of 56706156577 is 77565160765.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77565160765 = 5 ⋅15513032153.

It is a cyclic number.

It is not a de Polignac number, because 56706156577 - 2¹⁹ = 56705632289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56706156571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4050439749 + ... + 4050439762.

It is an arithmetic number, because the mean of its divisors is an integer number (16201759024).

Almost surely, 2^56706156577 is an apocalyptic number.

It is an amenable number.

56706156577 is a deficient number, since it is larger than the sum of its proper divisors (8100879519).

56706156577 is an equidigital number, since it uses as much as digits as its factorization.

56706156577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8100879518.

The product of its (nonzero) digits is 9261000, while the sum is 55.

The spelling of 56706156577 in words is "fifty-six billion, seven hundred six million, one hundred fifty-six thousand, five hundred seventy-seven".