642767296290 has 32 divisors (see below), whose sum is σ = 1763018870400. Its totient is φ = 146918239104.

The previous prime is 642767296279. The next prime is 642767296291. The reversal of 642767296290 is 92692767246.

It is not an unprimeable number, because it can be changed into a prime (642767296291) 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, 1530398115 + ... + 1530398534.

It is an arithmetic number, because the mean of its divisors is an integer number (55094339700).

Almost surely, 2^642767296290 is an apocalyptic number.

642767296290 is an abundant number, since it is smaller than the sum of its proper divisors (1120251574110).

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

642767296290 is a wasteful number, since it uses less digits than its factorization.

642767296290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3060796666.

The product of its (nonzero) digits is 27433728, while the sum is 60.

The spelling of 642767296290 in words is "six hundred forty-two billion, seven hundred sixty-seven million, two hundred ninety-six thousand, two hundred ninety".