2385405738831 has 16 divisors (see below), whose sum is σ = 3205834956800. Its totient is φ = 1577625463008.

The previous prime is 2385405738809. The next prime is 2385405738883. The reversal of 2385405738831 is 1388375045832.

It is not a de Polignac number, because 2385405738831 - 2⁵ = 2385405738799 is a prime.

It is a super-2 number, since 2×2385405738831² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2385405738031) 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, 4775685 + ... + 5251473.

It is an arithmetic number, because the mean of its divisors is an integer number (200364684800).

Almost surely, 2^{2385405738831} is an apocalyptic number.

2385405738831 is a deficient number, since it is larger than the sum of its proper divisors (820429217969).

2385405738831 is a wasteful number, since it uses less digits than its factorization.

2385405738831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489078.

The product of its (nonzero) digits is 19353600, while the sum is 57.

The spelling of 2385405738831 in words is "two trillion, three hundred eighty-five billion, four hundred five million, seven hundred thirty-eight thousand, eight hundred thirty-one".