2600015881 has 2 divisors, whose sum is σ = 2600015882. Its totient is φ = 2600015880.

The previous prime is 2600015843. The next prime is 2600015893. The reversal of 2600015881 is 1885100062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1422496656 + 1177519225 = 37716^2 + 34315^2 .

It is a cyclic number.

It is not a de Polignac number, because 2600015881 - 2¹¹ = 2600013833 is a prime.

It is a super-2 number, since 2×2600015881² = 13520165162904412322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2600015281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1300007940 + 1300007941.

It is an arithmetic number, because the mean of its divisors is an integer number (1300007941).

Almost surely, 2^2600015881 is an apocalyptic number.

It is an amenable number.

2600015881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2600015881 is an equidigital number, since it uses as much as digits as its factorization.

2600015881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 2600015881 is about 50990.3508617072. The cubic root of 2600015881 is about 1375.0716667439.

The spelling of 2600015881 in words is "two billion, six hundred million, fifteen thousand, eight hundred eighty-one".