84578724311 has 16 divisors (see below), whose sum is σ = 88248213504. Its totient is φ = 80989088544.

The previous prime is 84578724301. The next prime is 84578724313. The reversal of 84578724311 is 11342787548.

It is a cyclic number.

It is not a de Polignac number, because 84578724311 - 2³⁰ = 83504982487 is a prime.

It is a super-2 number, since 2×84578724311² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84578724311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84578724313) 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, 3010250 + ... + 3038216.

It is an arithmetic number, because the mean of its divisors is an integer number (5515513344).

Almost surely, 2^84578724311 is an apocalyptic number.

84578724311 is a deficient number, since it is larger than the sum of its proper divisors (3669489193).

84578724311 is a wasteful number, since it uses less digits than its factorization.

84578724311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29390.

The product of its digits is 1505280, while the sum is 50.

The spelling of 84578724311 in words is "eighty-four billion, five hundred seventy-eight million, seven hundred twenty-four thousand, three hundred eleven".