642130081647274 has 32 divisors (see below), whose sum is σ = 1073632081121280. Its totient is φ = 285570377727600.

The previous prime is 642130081647259. The next prime is 642130081647331. The reversal of 642130081647274 is 472746180031246.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1172018314 + ... + 1172566069.

It is an arithmetic number, because the mean of its divisors is an integer number (33551002535040).

Almost surely, 2^{642130081647274} is an apocalyptic number.

642130081647274 is a deficient number, since it is larger than the sum of its proper divisors (431501999474006).

642130081647274 is a wasteful number, since it uses less digits than its factorization.

642130081647274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344584666.

The product of its (nonzero) digits is 10838016, while the sum is 55.

The spelling of 642130081647274 in words is "six hundred forty-two trillion, one hundred thirty billion, eighty-one million, six hundred forty-seven thousand, two hundred seventy-four".