5261162139 has 12 divisors (see below), whose sum is σ = 7880918136. Its totient is φ = 3507441264.

The previous prime is 5261162113. The next prime is 5261162143. The reversal of 5261162139 is 9312611625.

5261162139 is a `hidden beast` number, since 5 + 2 + 611 + 6 + 2 + 1 + 39 = 666.

It is not a de Polignac number, because 5261162139 - 2¹⁷ = 5261031067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5261162539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10825194 + ... + 10825679.

It is an arithmetic number, because the mean of its divisors is an integer number (656743178).

Almost surely, 2^5261162139 is an apocalyptic number.

5261162139 is a deficient number, since it is larger than the sum of its proper divisors (2619755997).

5261162139 is an equidigital number, since it uses as much as digits as its factorization.

5261162139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21650888 (or 21650876 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 5261162139 is about 72533.8689096342. The cubic root of 5261162139 is about 1739.2441931495.

The spelling of 5261162139 in words is "five billion, two hundred sixty-one million, one hundred sixty-two thousand, one hundred thirty-nine".