140643218860 has 24 divisors (see below), whose sum is σ = 295360835616. Its totient is φ = 56255368320.

The previous prime is 140643218809. The next prime is 140643218873. The reversal of 140643218860 is 68812346041.

It is a super-2 number, since 2×140643218860² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580800 + ... + 786520.

It is an arithmetic number, because the mean of its divisors is an integer number (12306701484).

Almost surely, 2^140643218860 is an apocalyptic number.

140643218860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140643218860 is an abundant number, since it is smaller than the sum of its proper divisors (154717616756).

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

140643218860 is a wasteful number, since it uses less digits than its factorization.

140643218860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239913 (or 239911 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 140643218860 in words is "one hundred forty billion, six hundred forty-three million, two hundred eighteen thousand, eight hundred sixty".