84653657089 has 8 divisors (see below), whose sum is σ = 86289850152. Its totient is φ = 83018906880.

The previous prime is 84653657069. The next prime is 84653657107. The reversal of 84653657089 is 98075635648.

It can be written as a sum of positive squares in 4 ways, for example, as 58593043600 + 26060613489 = 242060^2 + 161433^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 84653657089 - 2³¹ = 82506173441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84653657069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241864 + ... + 477289.

It is an arithmetic number, because the mean of its divisors is an integer number (10786231269).

Almost surely, 2^84653657089 is an apocalyptic number.

It is an amenable number.

84653657089 is a deficient number, since it is larger than the sum of its proper divisors (1636193063).

84653657089 is a wasteful number, since it uses less digits than its factorization.

84653657089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721427.

The product of its (nonzero) digits is 43545600, while the sum is 61.

The spelling of 84653657089 in words is "eighty-four billion, six hundred fifty-three million, six hundred fifty-seven thousand, eighty-nine".