642025761380 has 48 divisors (see below), whose sum is σ = 1379720067264. Its totient is φ = 250817750400.

The previous prime is 642025761373. The next prime is 642025761439. The reversal of 642025761380 is 83167520246.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15014030 + ... + 15056730.

It is an arithmetic number, because the mean of its divisors is an integer number (28744168068).

Almost surely, 2^642025761380 is an apocalyptic number.

It is an amenable number.

642025761380 is an abundant number, since it is smaller than the sum of its proper divisors (737694305884).

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

642025761380 is a wasteful number, since it uses less digits than its factorization.

642025761380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60236 (or 60234 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 642025761380 in words is "six hundred forty-two billion, twenty-five million, seven hundred sixty-one thousand, three hundred eighty".