642413056319 has 8 divisors (see below), whose sum is σ = 652986664512. Its totient is φ = 631840811040.

The previous prime is 642413056297. The next prime is 642413056343. The reversal of 642413056319 is 913650314246.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-642413056319 is a prime.

It is a super-2 number, since 2×642413056319² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 642413056319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642413056379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 632417 + ... + 1297989.

It is an arithmetic number, because the mean of its divisors is an integer number (81623333064).

Almost surely, 2^642413056319 is an apocalyptic number.

642413056319 is a deficient number, since it is larger than the sum of its proper divisors (10573608193).

642413056319 is a wasteful number, since it uses less digits than its factorization.

642413056319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681457.

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 642413056319 in words is "six hundred forty-two billion, four hundred thirteen million, fifty-six thousand, three hundred nineteen".