84604618257 has 4 divisors (see below), whose sum is σ = 112806157680. Its totient is φ = 56403078836.

The previous prime is 84604618253. The next prime is 84604618277. The reversal of 84604618257 is 75281640648.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84604618257 - 2² = 84604618253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84604618253) 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, 14100769707 + ... + 14100769712.

It is an arithmetic number, because the mean of its divisors is an integer number (28201539420).

Almost surely, 2^84604618257 is an apocalyptic number.

It is an amenable number.

84604618257 is a deficient number, since it is larger than the sum of its proper divisors (28201539423).

84604618257 is a wasteful number, since it uses less digits than its factorization.

84604618257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28201539422.

The product of its (nonzero) digits is 2580480, while the sum is 51.

The spelling of 84604618257 in words is "eighty-four billion, six hundred four million, six hundred eighteen thousand, two hundred fifty-seven".