26690693354 has 16 divisors (see below), whose sum is σ = 43136229192. Its totient is φ = 12312926208.

The previous prime is 26690693329. The next prime is 26690693383. The reversal of 26690693354 is 45339609662.

It can be written as a sum of positive squares in 4 ways, for example, as 2797881025 + 23892812329 = 52895^2 + 154573^2 .

It is a super-2 number, since 2×26690693354² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26690693296 and 26690693305.

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 in 7 ways as a sum of consecutive naturals, for example, 187979 + ... + 297854.

Almost surely, 2^26690693354 is an apocalyptic number.

26690693354 is a deficient number, since it is larger than the sum of its proper divisors (16445535838).

26690693354 is a wasteful number, since it uses less digits than its factorization.

26690693354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487961.

The product of its (nonzero) digits is 6298560, while the sum is 53.

The spelling of 26690693354 in words is "twenty-six billion, six hundred ninety million, six hundred ninety-three thousand, three hundred fifty-four".