2643713964978 has 16 divisors (see below), whose sum is σ = 5565713610720. Its totient is φ = 834857041536.

The previous prime is 2643713964961. The next prime is 2643713964979. The reversal of 2643713964978 is 8794693173462.

It is not an unprimeable number, because it can be changed into a prime (2643713964979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11595236575 + ... + 11595236802.

It is an arithmetic number, because the mean of its divisors is an integer number (347857100670).

Almost surely, 2^{2643713964978} is an apocalyptic number.

2643713964978 is an abundant number, since it is smaller than the sum of its proper divisors (2921999645742).

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

2643713964978 is a wasteful number, since it uses less digits than its factorization.

2643713964978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23190473401.

The product of its digits is 329204736, while the sum is 69.

The spelling of 2643713964978 in words is "two trillion, six hundred forty-three billion, seven hundred thirteen million, nine hundred sixty-four thousand, nine hundred seventy-eight".