26993477769 has 16 divisors (see below), whose sum is σ = 36717382080. Its totient is φ = 17634807360.

The previous prime is 26993477743. The next prime is 26993477789. The reversal of 26993477769 is 96777439962.

It is not a de Polignac number, because 26993477769 - 2⁵ = 26993477737 is a prime.

It is a super-2 number, since 2×26993477769² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26993477789) 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 15 ways as a sum of consecutive naturals, for example, 224947 + ... + 323400.

It is an arithmetic number, because the mean of its divisors is an integer number (2294836380).

Almost surely, 2^26993477769 is an apocalyptic number.

It is an amenable number.

26993477769 is a deficient number, since it is larger than the sum of its proper divisors (9723904311).

26993477769 is a wasteful number, since it uses less digits than its factorization.

26993477769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548680.

The product of its digits is 216040608, while the sum is 69.

The spelling of 26993477769 in words is "twenty-six billion, nine hundred ninety-three million, four hundred seventy-seven thousand, seven hundred sixty-nine".