26974223656 has 8 divisors (see below), whose sum is σ = 50576669370. Its totient is φ = 13487111824.

The previous prime is 26974223641. The next prime is 26974223711. The reversal of 26974223656 is 65632247962.

It can be written as a sum of positive squares in only one way, i.e., 14837676100 + 12136547556 = 121810^2 + 110166^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1685888971 + ... + 1685888986.

Almost surely, 2^26974223656 is an apocalyptic number.

It is an amenable number.

26974223656 is a deficient number, since it is larger than the sum of its proper divisors (23602445714).

26974223656 is a wasteful number, since it uses less digits than its factorization.

26974223656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3371777963 (or 3371777959 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 52.

The spelling of 26974223656 in words is "twenty-six billion, nine hundred seventy-four million, two hundred twenty-three thousand, six hundred fifty-six".