26809931970 has 48 divisors (see below), whose sum is σ = 71326899072. Its totient is φ = 6983051040.

The previous prime is 26809931917. The next prime is 26809931987. The reversal of 26809931970 is 7913990862.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3459946 + ... + 3467685.

It is an arithmetic number, because the mean of its divisors is an integer number (1485977064).

Almost surely, 2^26809931970 is an apocalyptic number.

26809931970 is an abundant number, since it is smaller than the sum of its proper divisors (44516967102).

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

26809931970 is a wasteful number, since it uses less digits than its factorization.

26809931970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6927687 (or 6927684 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The spelling of 26809931970 in words is "twenty-six billion, eight hundred nine million, nine hundred thirty-one thousand, nine hundred seventy".