26991222970 has 64 divisors (see below), whose sum is σ = 49829167872. Its totient is φ = 10523968000.

The previous prime is 26991222953. The next prime is 26991222989. The reversal of 26991222970 is 7922219962.

It is a super-2 number, since 2×26991222970² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48457932 + ... + 48458488.

It is an arithmetic number, because the mean of its divisors is an integer number (778580748).

Almost surely, 2^26991222970 is an apocalyptic number.

26991222970 is a deficient number, since it is larger than the sum of its proper divisors (22837944902).

26991222970 is a wasteful number, since it uses less digits than its factorization.

26991222970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287.

The product of its (nonzero) digits is 489888, while the sum is 49.

The spelling of 26991222970 in words is "twenty-six billion, nine hundred ninety-one million, two hundred twenty-two thousand, nine hundred seventy".