2686021086625 has 48 divisors (see below), whose sum is σ = 3542957849808. Its totient is φ = 2032793280000.

The previous prime is 2686021086577. The next prime is 2686021086629. The reversal of 2686021086625 is 5266801206862.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 764939153664 + 1921081932961 = 874608^2 + 1386031^2 .

It is not a de Polignac number, because 2686021086625 - 2³⁹ = 2136265272737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2686021086629) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31590169 + ... + 31675081.

It is an arithmetic number, because the mean of its divisors is an integer number (73811621871).

Almost surely, 2^{2686021086625} is an apocalyptic number.

2686021086625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2686021086625 is a deficient number, since it is larger than the sum of its proper divisors (856936763183).

2686021086625 is an equidigital number, since it uses as much as digits as its factorization.

2686021086625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85667 (or 85638 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 52.

The spelling of 2686021086625 in words is "two trillion, six hundred eighty-six billion, twenty-one million, eighty-six thousand, six hundred twenty-five".