57670066691 has 4 divisors (see below), whose sum is σ = 57695219472. Its totient is φ = 57644913912.

The previous prime is 57670066679. The next prime is 57670066733. The reversal of 57670066691 is 19666007675.

57670066691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 57670066691 - 2¹⁴ = 57670050307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57670066891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12572951 + ... + 12577536.

It is an arithmetic number, because the mean of its divisors is an integer number (14423804868).

Almost surely, 2^57670066691 is an apocalyptic number.

57670066691 is a deficient number, since it is larger than the sum of its proper divisors (25152781).

57670066691 is a wasteful number, since it uses less digits than its factorization.

57670066691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25152780.

The product of its (nonzero) digits is 2857680, while the sum is 53.

The spelling of 57670066691 in words is "fifty-seven billion, six hundred seventy million, sixty-six thousand, six hundred ninety-one".