57147561802 has 8 divisors (see below), whose sum is σ = 85795692516. Its totient is φ = 28548997632.

The previous prime is 57147561787. The next prime is 57147561833. The reversal of 57147561802 is 20816574175.

It can be written as a sum of positive squares in 2 ways, for example, as 56069030521 + 1078531281 = 236789^2 + 32841^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12388753 + ... + 12393364.

Almost surely, 2^57147561802 is an apocalyptic number.

57147561802 is a deficient number, since it is larger than the sum of its proper divisors (28648130714).

57147561802 is a wasteful number, since it uses less digits than its factorization.

57147561802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24783272.

The product of its (nonzero) digits is 470400, while the sum is 46.

The spelling of 57147561802 in words is "fifty-seven billion, one hundred forty-seven million, five hundred sixty-one thousand, eight hundred two".