84287972722 has 32 divisors (see below), whose sum is σ = 135191301120. Its totient is φ = 39325487040.

The previous prime is 84287972707. The next prime is 84287972723. The reversal of 84287972722 is 22727978248.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is not an unprimeable number, because it can be changed into a prime (84287972723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1330123 + ... + 1392049.

It is an arithmetic number, because the mean of its divisors is an integer number (4224728160).

Almost surely, 2^84287972722 is an apocalyptic number.

84287972722 is a deficient number, since it is larger than the sum of its proper divisors (50903328398).

84287972722 is a wasteful number, since it uses less digits than its factorization.

84287972722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62746.

The product of its digits is 12644352, while the sum is 58.

The spelling of 84287972722 in words is "eighty-four billion, two hundred eighty-seven million, nine hundred seventy-two thousand, seven hundred twenty-two".