57644421975783 has 6 divisors (see below), whose sum is σ = 83264165076144. Its totient is φ = 38429614650516.

The previous prime is 57644421975769. The next prime is 57644421975799. The reversal of 57644421975783 is 38757912444675.

It is a happy number.

57644421975783 is a `hidden beast` number, since 5 + 7 + 6 + 4 + 4 + 42 + 1 + 9 + 7 + 578 + 3 = 666.

It is not a de Polignac number, because 57644421975783 - 2¹² = 57644421971687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57644421975713) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3202467887535 + ... + 3202467887552.

It is an arithmetic number, because the mean of its divisors is an integer number (13877360846024).

Almost surely, 2^{57644421975783} is an apocalyptic number.

57644421975783 is a deficient number, since it is larger than the sum of its proper divisors (25619743100361).

57644421975783 is a wasteful number, since it uses less digits than its factorization.

57644421975783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6404935775093 (or 6404935775090 counting only the distinct ones).

The product of its digits is 1422489600, while the sum is 72.

The spelling of 57644421975783 in words is "fifty-seven trillion, six hundred forty-four billion, four hundred twenty-one million, nine hundred seventy-five thousand, seven hundred eighty-three".