42155612142638 has 16 divisors (see below), whose sum is σ = 65756361980160. Its totient is φ = 20244435506400.

The previous prime is 42155612142613. The next prime is 42155612142641. The reversal of 42155612142638 is 83624121655124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1902661433 + ... + 1902683588.

It is an arithmetic number, because the mean of its divisors is an integer number (4109772623760).

Almost surely, 2^{42155612142638} is an apocalyptic number.

42155612142638 is a deficient number, since it is larger than the sum of its proper divisors (23600749837522).

42155612142638 is a wasteful number, since it uses less digits than its factorization.

42155612142638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3805345243.

The product of its digits is 2764800, while the sum is 50.

The spelling of 42155612142638 in words is "forty-two trillion, one hundred fifty-five billion, six hundred twelve million, one hundred forty-two thousand, six hundred thirty-eight".