26639770164 has 48 divisors (see below), whose sum is σ = 71047632768. Its totient is φ = 7610479488.

The previous prime is 26639770153. The next prime is 26639770181. The reversal of 26639770164 is 46107793662.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1144062 + ... + 1167114.

It is an arithmetic number, because the mean of its divisors is an integer number (1480159016).

Almost surely, 2^26639770164 is an apocalyptic number.

It is an amenable number.

26639770164 is an abundant number, since it is smaller than the sum of its proper divisors (44407862604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26639770164 is a wasteful number, since it uses less digits than its factorization.

26639770164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36824 (or 36822 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 51.

The spelling of 26639770164 in words is "twenty-six billion, six hundred thirty-nine million, seven hundred seventy thousand, one hundred sixty-four".