26990779175 has 12 divisors (see below), whose sum is σ = 35230070280. Its totient is φ = 20456169120.

The previous prime is 26990779171. The next prime is 26990779183. The reversal of 26990779175 is 57197709962.

It is not a de Polignac number, because 26990779175 - 2² = 26990779171 is a prime.

It is a super-2 number, since 2×26990779175² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26990779171) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 28410872 + ... + 28411821.

It is an arithmetic number, because the mean of its divisors is an integer number (2935839190).

Almost surely, 2^26990779175 is an apocalyptic number.

26990779175 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

26990779175 is a deficient number, since it is larger than the sum of its proper divisors (8239291105).

26990779175 is a wasteful number, since it uses less digits than its factorization.

26990779175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56822722 (or 56822717 counting only the distinct ones).

The product of its (nonzero) digits is 15002820, while the sum is 62.

The spelling of 26990779175 in words is "twenty-six billion, nine hundred ninety million, seven hundred seventy-nine thousand, one hundred seventy-five".