57670053821 has 2 divisors, whose sum is σ = 57670053822. Its totient is φ = 57670053820.

The previous prime is 57670053761. The next prime is 57670053841. The reversal of 57670053821 is 12835007675.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33911222500 + 23758831321 = 184150^2 + 154139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57670053821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57670053841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28835026910 + 28835026911.

It is an arithmetic number, because the mean of its divisors is an integer number (28835026911).

Almost surely, 2^57670053821 is an apocalyptic number.

It is an amenable number.

57670053821 is a deficient number, since it is larger than the sum of its proper divisors (1).

57670053821 is an equidigital number, since it uses as much as digits as its factorization.

57670053821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 352800, while the sum is 44.

The spelling of 57670053821 in words is "fifty-seven billion, six hundred seventy million, fifty-three thousand, eight hundred twenty-one".