26617712672 has 12 divisors (see below), whose sum is σ = 52403621886. Its totient is φ = 13308856320.

The previous prime is 26617712663. The next prime is 26617712689. The reversal of 26617712672 is 27621771662.

It can be written as a sum of positive squares in only one way, i.e., 13622624656 + 12995088016 = 116716^2 + 113996^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415901729 + ... + 415901792.

Almost surely, 2^26617712672 is an apocalyptic number.

It is an amenable number.

26617712672 is a deficient number, since it is larger than the sum of its proper divisors (25785909214).

26617712672 is an equidigital number, since it uses as much as digits as its factorization.

26617712672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831803531 (or 831803523 counting only the distinct ones).

The product of its digits is 592704, while the sum is 47.

The spelling of 26617712672 in words is "twenty-six billion, six hundred seventeen million, seven hundred twelve thousand, six hundred seventy-two".