642416152645 has 8 divisors (see below), whose sum is σ = 811473035040. Its totient is φ = 486883820880.

The previous prime is 642416152621. The next prime is 642416152757. The reversal of 642416152645 is 546251614246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 642416152645 - 2¹³ = 642416144453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 642416152595 and 642416152604.

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, 3381137551 + ... + 3381137740.

It is an arithmetic number, because the mean of its divisors is an integer number (101434129380).

Almost surely, 2^642416152645 is an apocalyptic number.

It is an amenable number.

642416152645 is a deficient number, since it is larger than the sum of its proper divisors (169056882395).

642416152645 is a wasteful number, since it uses less digits than its factorization.

642416152645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6762275315.

The product of its digits is 1382400, while the sum is 46.

The spelling of 642416152645 in words is "six hundred forty-two billion, four hundred sixteen million, one hundred fifty-two thousand, six hundred forty-five".