13330777568464 has 40 divisors (see below), whose sum is σ = 26460703797192. Its totient is φ = 6502237870080.

The previous prime is 13330777568453. The next prime is 13330777568473. The reversal of 13330777568464 is 46486577703331.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8949160000 + 13321828408464 = 94600^2 + 3649908^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13330777568396 and 13330777568405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6493762 + ... + 8296414.

Almost surely, 2^{13330777568464} is an apocalyptic number.

It is an amenable number.

13330777568464 is a deficient number, since it is larger than the sum of its proper divisors (13129926228728).

13330777568464 is a wasteful number, since it uses less digits than its factorization.

13330777568464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813975 (or 1813969 counting only the distinct ones).

The product of its (nonzero) digits is 213373440, while the sum is 64.

The spelling of 13330777568464 in words is "thirteen trillion, three hundred thirty billion, seven hundred seventy-seven million, five hundred sixty-eight thousand, four hundred sixty-four".