84864621139 has 8 divisors (see below), whose sum is σ = 87171243840. Its totient is φ = 82578873216.

The previous prime is 84864621137. The next prime is 84864621143. The reversal of 84864621139 is 93112646848.

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 84864621139 - 2¹ = 84864621137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84864621137) 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, 5210454 + ... + 5226715.

It is an arithmetic number, because the mean of its divisors is an integer number (10896405480).

Almost surely, 2^84864621139 is an apocalyptic number.

84864621139 is a deficient number, since it is larger than the sum of its proper divisors (2306622701).

84864621139 is a wasteful number, since it uses less digits than its factorization.

84864621139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10437389.

The product of its digits is 1990656, while the sum is 52.

The spelling of 84864621139 in words is "eighty-four billion, eight hundred sixty-four million, six hundred twenty-one thousand, one hundred thirty-nine".