427191835642 has 128 divisors (see below), whose sum is σ = 782795301120. Its totient is φ = 172275517440.

The previous prime is 427191835639. The next prime is 427191835643. The reversal of 427191835642 is 246538191724.

It is a self number, because there is not a number n which added to its sum of digits gives 427191835642.

It is not an unprimeable number, because it can be changed into a prime (427191835643) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 173724609 + ... + 173727067.

It is an arithmetic number, because the mean of its divisors is an integer number (6115588290).

Almost surely, 2^427191835642 is an apocalyptic number.

427191835642 is a deficient number, since it is larger than the sum of its proper divisors (355603465478).

427191835642 is a wasteful number, since it uses less digits than its factorization.

427191835642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2768.

The product of its digits is 2903040, while the sum is 52.

The spelling of 427191835642 in words is "four hundred twenty-seven billion, one hundred ninety-one million, eight hundred thirty-five thousand, six hundred forty-two".