2521267267761 has 12 divisors (see below), whose sum is σ = 3972905997840. Its totient is φ = 1528040768280.

The previous prime is 2521267267741. The next prime is 2521267267847. The reversal of 2521267267761 is 1677627621252.

2521267267761 is a `hidden beast` number, since 2 + 52 + 1 + 267 + 267 + 76 + 1 = 666.

It is not a de Polignac number, because 2521267267761 - 2⁶ = 2521267267697 is a prime.

It is a super-3 number, since 3×2521267267761³ (a number of 38 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2521267267698 and 2521267267707.

It is not an unprimeable number, because it can be changed into a prime (2521267267741) 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, 12733672971 + ... + 12733673168.

It is an arithmetic number, because the mean of its divisors is an integer number (331075499820).

Almost surely, 2^{2521267267761} is an apocalyptic number.

It is an amenable number.

2521267267761 is a deficient number, since it is larger than the sum of its proper divisors (1451638730079).

2521267267761 is a wasteful number, since it uses less digits than its factorization.

2521267267761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25467346156 (or 25467346153 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 54.

The spelling of 2521267267761 in words is "two trillion, five hundred twenty-one billion, two hundred sixty-seven million, two hundred sixty-seven thousand, seven hundred sixty-one".