641642678310 has 16 divisors (see below), whose sum is σ = 1539942428016. Its totient is φ = 171104714208.

The previous prime is 641642678279. The next prime is 641642678311. The reversal of 641642678310 is 13876246146.

It is a super-2 number, since 2×641642678310² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 641642678310.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641642678311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10694044609 + ... + 10694044668.

It is an arithmetic number, because the mean of its divisors is an integer number (96246401751).

Almost surely, 2^641642678310 is an apocalyptic number.

641642678310 is an abundant number, since it is smaller than the sum of its proper divisors (898299749706).

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

641642678310 is a wasteful number, since it uses less digits than its factorization.

641642678310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21388089287.

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 641642678310 in words is "six hundred forty-one billion, six hundred forty-two million, six hundred seventy-eight thousand, three hundred ten".