26649660416512 has 80 divisors (see below), whose sum is σ = 60857512227072. Its totient is φ = 11420628295680.

The previous prime is 26649660416507. The next prime is 26649660416539. The reversal of 26649660416512 is 21561406694662.

It is a super-2 number, since 2×26649660416512² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

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, 65107212 + ... + 65515252.

Almost surely, 2^{26649660416512} is an apocalyptic number.

It is an amenable number.

26649660416512 is an abundant number, since it is smaller than the sum of its proper divisors (34207851810560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26649660416512 is an equidigital number, since it uses as much as digits as its factorization.

26649660416512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426289 (or 426273 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 58.

The spelling of 26649660416512 in words is "twenty-six trillion, six hundred forty-nine billion, six hundred sixty million, four hundred sixteen thousand, five hundred twelve".