57016821213 has 120 divisors (see below), whose sum is σ = 99073630656. Its totient is φ = 32400259200.

The previous prime is 57016821163. The next prime is 57016821229. The reversal of 57016821213 is 31212861075.

57016821213 is a `hidden beast` number, since 570 + 1 + 6 + 82 + 1 + 2 + 1 + 3 = 666.

It is not a de Polignac number, because 57016821213 - 2¹⁸ = 57016559069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57016821263) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 33129193 + ... + 33130913.

Almost surely, 2^57016821213 is an apocalyptic number.

It is an amenable number.

57016821213 is a deficient number, since it is larger than the sum of its proper divisors (42056809443).

57016821213 is a wasteful number, since it uses less digits than its factorization.

57016821213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885 (or 1857 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 57016821213 in words is "fifty-seven billion, sixteen million, eight hundred twenty-one thousand, two hundred thirteen".