57138021087 has 24 divisors (see below), whose sum is σ = 88690548096. Its totient is φ = 32625130608.

The previous prime is 57138021077. The next prime is 57138021103. The reversal of 57138021087 is 78012083175.

It is not a de Polignac number, because 57138021087 - 2⁸ = 57138020831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57138021077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42388 + ... + 340694.

It is an arithmetic number, because the mean of its divisors is an integer number (3695439504).

Almost surely, 2^57138021087 is an apocalyptic number.

57138021087 is a deficient number, since it is larger than the sum of its proper divisors (31552527009).

57138021087 is a wasteful number, since it uses less digits than its factorization.

57138021087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299627 (or 299620 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 42.

The spelling of 57138021087 in words is "fifty-seven billion, one hundred thirty-eight million, twenty-one thousand, eighty-seven".