5267721515261 has 4 divisors (see below), whose sum is σ = 5346344224512. Its totient is φ = 5189098806012.

The previous prime is 5267721515197. The next prime is 5267721515269. The reversal of 5267721515261 is 1625151277625.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5267721515261 - 2⁶ = 5267721515197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5267721515269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39311354525 + ... + 39311354658.

It is an arithmetic number, because the mean of its divisors is an integer number (1336586056128).

Almost surely, 2^{5267721515261} is an apocalyptic number.

It is an amenable number.

5267721515261 is a deficient number, since it is larger than the sum of its proper divisors (78622709251).

5267721515261 is an equidigital number, since it uses as much as digits as its factorization.

5267721515261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78622709250.

The product of its digits is 1764000, while the sum is 50.

The spelling of 5267721515261 in words is "five trillion, two hundred sixty-seven billion, seven hundred twenty-one million, five hundred fifteen thousand, two hundred sixty-one".