84916915747 has 4 divisors (see below), whose sum is σ = 89912028456. Its totient is φ = 79921803040.

The previous prime is 84916915723. The next prime is 84916915753. The reversal of 84916915747 is 74751961948.

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 84916915747 - 2³¹ = 82769432099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84916915777) 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, 2497556329 + ... + 2497556362.

It is an arithmetic number, because the mean of its divisors is an integer number (22478007114).

Almost surely, 2^84916915747 is an apocalyptic number.

84916915747 is a deficient number, since it is larger than the sum of its proper divisors (4995112709).

84916915747 is a wasteful number, since it uses less digits than its factorization.

84916915747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4995112708.

The product of its digits is 15240960, while the sum is 61.

The spelling of 84916915747 in words is "eighty-four billion, nine hundred sixteen million, nine hundred fifteen thousand, seven hundred forty-seven".