2643936876342 has 24 divisors (see below), whose sum is σ = 5763674260344. Its totient is φ = 875905467264.

The previous prime is 2643936876307. The next prime is 2643936876367. The reversal of 2643936876342 is 2436786393462.

2643936876342 is a `hidden beast` number, since 26 + 439 + 3 + 6 + 87 + 63 + 42 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 2643936876342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 450565723 + ... + 450571590.

It is an arithmetic number, because the mean of its divisors is an integer number (240153094181).

Almost surely, 2^{2643936876342} is an apocalyptic number.

2643936876342 is an abundant number, since it is smaller than the sum of its proper divisors (3119737384002).

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

2643936876342 is a wasteful number, since it uses less digits than its factorization.

2643936876342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901137484 (or 901137481 counting only the distinct ones).

The product of its digits is 188116992, while the sum is 63.

The spelling of 2643936876342 in words is "two trillion, six hundred forty-three billion, nine hundred thirty-six million, eight hundred seventy-six thousand, three hundred forty-two".