538646646835 has 32 divisors (see below), whose sum is σ = 736062474240. Its totient is φ = 374846419200.

The previous prime is 538646646829. The next prime is 538646646847.

538646646835 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 538646646835 - 2¹³ = 538646638643 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1623097 + ... + 1926586.

It is an arithmetic number, because the mean of its divisors is an integer number (23001952320).

Almost surely, 2^538646646835 is an apocalyptic number.

538646646835 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

538646646835 is a deficient number, since it is larger than the sum of its proper divisors (197415827405).

538646646835 is a wasteful number, since it uses less digits than its factorization.

538646646835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3549819.

The product of its digits is 298598400, while the sum is 64.

The spelling of 538646646835 in words is "five hundred thirty-eight billion, six hundred forty-six million, six hundred forty-six thousand, eight hundred thirty-five".