642255507038 has 8 divisors (see below), whose sum is σ = 996603373080. Its totient is φ = 310054382680.

The previous prime is 642255507001. The next prime is 642255507043. The reversal of 642255507038 is 830705552246.

642255507038 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 642255506983 and 642255507001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5536685348 + ... + 5536685463.

It is an arithmetic number, because the mean of its divisors is an integer number (124575421635).

Almost surely, 2^642255507038 is an apocalyptic number.

642255507038 is a deficient number, since it is larger than the sum of its proper divisors (354347866042).

642255507038 is a wasteful number, since it uses less digits than its factorization.

642255507038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11073370842.

The product of its (nonzero) digits is 2016000, while the sum is 47.

The spelling of 642255507038 in words is "six hundred forty-two billion, two hundred fifty-five million, five hundred seven thousand, thirty-eight".