57431333642 has 4 divisors (see below), whose sum is σ = 86147000466. Its totient is φ = 28715666820.

The previous prime is 57431333591. The next prime is 57431333651. The reversal of 57431333642 is 24633313475.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 38149511761 + 19281821881 = 195319^2 + 138859^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 57431333642.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 14357833409 + ... + 14357833412.

Almost surely, 2^57431333642 is an apocalyptic number.

57431333642 is a deficient number, since it is larger than the sum of its proper divisors (28715666824).

57431333642 is a wasteful number, since it uses less digits than its factorization.

57431333642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28715666823.

The product of its digits is 544320, while the sum is 41.

The spelling of 57431333642 in words is "fifty-seven billion, four hundred thirty-one million, three hundred thirty-three thousand, six hundred forty-two".