12649143864958 has 16 divisors (see below), whose sum is σ = 20089885220784. Its totient is φ = 5952517994880.

The previous prime is 12649143864949. The next prime is 12649143864961. The reversal of 12649143864958 is 85946834194621.

It is a super-2 number, since 2×12649143864958² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15252253 + ... + 16060183.

It is an arithmetic number, because the mean of its divisors is an integer number (1255617826299).

Almost surely, 2^{12649143864958} is an apocalyptic number.

12649143864958 is a deficient number, since it is larger than the sum of its proper divisors (7440741355826).

12649143864958 is a wasteful number, since it uses less digits than its factorization.

12649143864958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268427.

The product of its digits is 358318080, while the sum is 70.

The spelling of 12649143864958 in words is "twelve trillion, six hundred forty-nine billion, one hundred forty-three million, eight hundred sixty-four thousand, nine hundred fifty-eight".