642295051583612 has 48 divisors (see below), whose sum is σ = 1321482246432768. Its totient is φ = 267388361616960.

The previous prime is 642295051583561. The next prime is 642295051583617. The reversal of 642295051583612 is 216385150592246.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642295051583617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 510059714 + ... + 511317417.

It is an arithmetic number, because the mean of its divisors is an integer number (27530880134016).

Almost surely, 2^{642295051583612} is an apocalyptic number.

It is an amenable number.

642295051583612 is an abundant number, since it is smaller than the sum of its proper divisors (679187194849156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

642295051583612 is a wasteful number, since it uses less digits than its factorization.

642295051583612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021377786 (or 1021377784 counting only the distinct ones).

The product of its (nonzero) digits is 31104000, while the sum is 59.

The spelling of 642295051583612 in words is "six hundred forty-two trillion, two hundred ninety-five billion, fifty-one million, five hundred eighty-three thousand, six hundred twelve".