56771371511 has 4 divisors (see below), whose sum is σ = 56772127800. Its totient is φ = 56770615224.

The previous prime is 56771371483. The next prime is 56771371519. The reversal of 56771371511 is 11517317765.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56771371511 - 2¹⁴ = 56771355127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56771371519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251381 + ... + 420398.

It is an arithmetic number, because the mean of its divisors is an integer number (14193031950).

Almost surely, 2^56771371511 is an apocalyptic number.

56771371511 is a deficient number, since it is larger than the sum of its proper divisors (756289).

56771371511 is an equidigital number, since it uses as much as digits as its factorization.

56771371511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756288.

The product of its digits is 154350, while the sum is 44.

The spelling of 56771371511 in words is "fifty-six billion, seven hundred seventy-one million, three hundred seventy-one thousand, five hundred eleven".