26976531261 has 4 divisors (see below), whose sum is σ = 35968708352. Its totient is φ = 17984354172.

The previous prime is 26976531251. The next prime is 26976531271. The reversal of 26976531261 is 16213567962.

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 an interprime number because it is at equal distance from previous prime (26976531251) and next prime (26976531271).

It is not a de Polignac number, because 26976531261 - 2¹³ = 26976523069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26976531261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26976531221) 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, 4496088541 + ... + 4496088546.

It is an arithmetic number, because the mean of its divisors is an integer number (8992177088).

Almost surely, 2^26976531261 is an apocalyptic number.

It is an amenable number.

26976531261 is a deficient number, since it is larger than the sum of its proper divisors (8992177091).

26976531261 is an equidigital number, since it uses as much as digits as its factorization.

26976531261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8992177090.

The product of its digits is 816480, while the sum is 48.

The spelling of 26976531261 in words is "twenty-six billion, nine hundred seventy-six million, five hundred thirty-one thousand, two hundred sixty-one".