57461651666 has 4 divisors (see below), whose sum is σ = 86192477502. Its totient is φ = 28730825832.

The previous prime is 57461651587. The next prime is 57461651707. The reversal of 57461651666 is 66615616475.

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., 52794712441 + 4666939225 = 229771^2 + 68315^2 .

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, 14365412915 + ... + 14365412918.

Almost surely, 2^57461651666 is an apocalyptic number.

57461651666 is a deficient number, since it is larger than the sum of its proper divisors (28730825836).

57461651666 is a wasteful number, since it uses less digits than its factorization.

57461651666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28730825835.

The product of its digits is 5443200, while the sum is 53.

The spelling of 57461651666 in words is "fifty-seven billion, four hundred sixty-one million, six hundred fifty-one thousand, six hundred sixty-six".