26949940971 has 48 divisors (see below), whose sum is σ = 37957258080. Its totient is φ = 17001861120.

The previous prime is 26949940967. The next prime is 26949940973. The reversal of 26949940971 is 17904994962.

It is a happy number.

It is not a de Polignac number, because 26949940971 - 2² = 26949940967 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26949940973) 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, 24300565 + ... + 24301673.

It is an arithmetic number, because the mean of its divisors is an integer number (790776210).

Almost surely, 2^26949940971 is an apocalyptic number.

26949940971 is a deficient number, since it is larger than the sum of its proper divisors (11007317109).

26949940971 is a wasteful number, since it uses less digits than its factorization.

26949940971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344 (or 1307 counting only the distinct ones).

The product of its (nonzero) digits is 8817984, while the sum is 60.

The spelling of 26949940971 in words is "twenty-six billion, nine hundred forty-nine million, nine hundred forty thousand, nine hundred seventy-one".