2539277307121 has 9 divisors (see below), whose sum is σ = 2679989444811. Its totient is φ = 2405602449864.

The previous prime is 2539277307097. The next prime is 2539277307187. The reversal of 2539277307121 is 1217037729352.

The square root of 2539277307121 is 1593511.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 312437399521 + 2226839907600 = 558961^2 + 1492260^2 .

It is not a de Polignac number, because 2539277307121 - 2¹⁵ = 2539277274353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2539277307191) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 30234775 + ... + 30318643.

It is an arithmetic number, because the mean of its divisors is an integer number (297776604979).

Almost surely, 2^{2539277307121} is an apocalyptic number.

2539277307121 is the 1593511-st square number.

2539277307121 is the 796756-th centered octagonal number.

It is an amenable number.

2539277307121 is a deficient number, since it is larger than the sum of its proper divisors (140712137690).

2539277307121 is an frugal number, since it uses more digits than its factorization.

2539277307121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167776 (or 83888 counting only the distinct ones).

The product of its (nonzero) digits is 1111320, while the sum is 49.

Multiplying 2539277307121 by its sum of digits (49), we get a square (124424588048929 = 11154577²).

The spelling of 2539277307121 in words is "two trillion, five hundred thirty-nine billion, two hundred seventy-seven million, three hundred seven thousand, one hundred twenty-one".