57027191990 has 32 divisors (see below), whose sum is σ = 107129952000. Its totient is φ = 21815431264.

The previous prime is 57027191987. The next prime is 57027191993. The reversal of 57027191990 is 9919172075.

It is an interprime number because it is at equal distance from previous prime (57027191987) and next prime (57027191993).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57027191993) 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 15 ways as a sum of consecutive naturals, for example, 1635761 + ... + 1670259.

It is an arithmetic number, because the mean of its divisors is an integer number (3347811000).

Almost surely, 2^57027191990 is an apocalyptic number.

57027191990 is a deficient number, since it is larger than the sum of its proper divisors (50102760010).

57027191990 is a wasteful number, since it uses less digits than its factorization.

57027191990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41716.

The product of its (nonzero) digits is 357210, while the sum is 50.

The spelling of 57027191990 in words is "fifty-seven billion, twenty-seven million, one hundred ninety-one thousand, nine hundred ninety".