642366996479 has 16 divisors (see below), whose sum is σ = 709003320480. Its totient is φ = 578205488640.

The previous prime is 642366996463. The next prime is 642366996499. The reversal of 642366996479 is 974699663246.

It is not a de Polignac number, because 642366996479 - 2⁴ = 642366996463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642366996499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 783107 + ... + 1377675.

It is an arithmetic number, because the mean of its divisors is an integer number (44312707530).

Almost surely, 2^642366996479 is an apocalyptic number.

642366996479 is a deficient number, since it is larger than the sum of its proper divisors (66636324001).

642366996479 is a wasteful number, since it uses less digits than its factorization.

642366996479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596650.

The product of its digits is 634894848, while the sum is 71.

The spelling of 642366996479 in words is "six hundred forty-two billion, three hundred sixty-six million, nine hundred ninety-six thousand, four hundred seventy-nine".