642985590570 has 32 divisors (see below), whose sum is σ = 1543652909568. Its totient is φ = 171408658368.

The previous prime is 642985590557. The next prime is 642985590571. The reversal of 642985590570 is 75095589246.

It is not an unprimeable number, because it can be changed into a prime (642985590571) 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, 3288769 + ... + 3478788.

It is an arithmetic number, because the mean of its divisors is an integer number (48239153424).

Almost surely, 2^642985590570 is an apocalyptic number.

642985590570 is an abundant number, since it is smaller than the sum of its proper divisors (900667318998).

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

642985590570 is a wasteful number, since it uses less digits than its factorization.

642985590570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6770734.

The product of its (nonzero) digits is 27216000, while the sum is 60.

The spelling of 642985590570 in words is "six hundred forty-two billion, nine hundred eighty-five million, five hundred ninety thousand, five hundred seventy".