56921185774 has 4 divisors (see below), whose sum is σ = 85381778664. Its totient is φ = 28460592886.

The previous prime is 56921185771. The next prime is 56921185817. The reversal of 56921185774 is 47758112965.

56921185774 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47758112965 = 5 ⋅9551622593.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56921185771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14230296442 + ... + 14230296445.

It is an arithmetic number, because the mean of its divisors is an integer number (21345444666).

Almost surely, 2^56921185774 is an apocalyptic number.

56921185774 is a deficient number, since it is larger than the sum of its proper divisors (28460592890).

56921185774 is a wasteful number, since it uses less digits than its factorization.

56921185774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28460592889.

The product of its digits is 4233600, while the sum is 55.

The spelling of 56921185774 in words is "fifty-six billion, nine hundred twenty-one million, one hundred eighty-five thousand, seven hundred seventy-four".