84501655697 has 4 divisors (see below), whose sum is σ = 88949111280. Its totient is φ = 80054200116.

The previous prime is 84501655663. The next prime is 84501655783. The reversal of 84501655697 is 79655610548.

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 84501655697 - 2¹² = 84501651601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84501655607) by changing a digit.

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, 2223727763 + ... + 2223727800.

It is an arithmetic number, because the mean of its divisors is an integer number (22237277820).

Almost surely, 2^84501655697 is an apocalyptic number.

It is an amenable number.

84501655697 is a deficient number, since it is larger than the sum of its proper divisors (4447455583).

84501655697 is a wasteful number, since it uses less digits than its factorization.

84501655697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4447455582.

The product of its (nonzero) digits is 9072000, while the sum is 56.

The spelling of 84501655697 in words is "eighty-four billion, five hundred one million, six hundred fifty-five thousand, six hundred ninety-seven".