642220600407 has 32 divisors (see below), whose sum is σ = 875590492608. Its totient is φ = 418558672896.

The previous prime is 642220600379. The next prime is 642220600429. The reversal of 642220600407 is 704006022246.

642220600407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 642220600407 - 2²³ = 642212211799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642220600447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121791523 + ... + 121796795.

It is an arithmetic number, because the mean of its divisors is an integer number (27362202894).

Almost surely, 2^642220600407 is an apocalyptic number.

642220600407 is a deficient number, since it is larger than the sum of its proper divisors (233369892201).

642220600407 is a wasteful number, since it uses less digits than its factorization.

642220600407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7939.

The product of its (nonzero) digits is 32256, while the sum is 33.

The spelling of 642220600407 in words is "six hundred forty-two billion, two hundred twenty million, six hundred thousand, four hundred seven".