5139898985 has 16 divisors (see below), whose sum is σ = 6647477760. Its totient is φ = 3792676800.

The previous prime is 5139898937. The next prime is 5139898997. The reversal of 5139898985 is 5898989315.

It is not a de Polignac number, because 5139898985 - 2²² = 5135704681 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (65).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55760 + ... + 115710.

It is an arithmetic number, because the mean of its divisors is an integer number (415467360).

Almost surely, 2^5139898985 is an apocalyptic number.

It is an amenable number.

5139898985 is a deficient number, since it is larger than the sum of its proper divisors (1507578775).

5139898985 is a wasteful number, since it uses less digits than its factorization.

5139898985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61288.

The product of its digits is 27993600, while the sum is 65.

The square root of 5139898985 is about 71693.0888231216. The cubic root of 5139898985 is about 1725.7777334544. Note that the first 4 decimals are identical.

The spelling of 5139898985 in words is "five billion, one hundred thirty-nine million, eight hundred ninety-eight thousand, nine hundred eighty-five".