140163878920 has 64 divisors (see below), whose sum is σ = 341791294320. Its totient is φ = 51423151104.

The previous prime is 140163878909. The next prime is 140163878923. The reversal of 140163878920 is 29878361041.

It can be written as a sum of positive squares in 8 ways, for example, as 58126316836 + 82037562084 = 241094^2 + 286422^2 .

It is not an unprimeable number, because it can be changed into a prime (140163878923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 776787 + ... + 940066.

Almost surely, 2^140163878920 is an apocalyptic number.

140163878920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140163878920 is an abundant number, since it is smaller than the sum of its proper divisors (201627415400).

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

140163878920 is a wasteful number, since it uses less digits than its factorization.

140163878920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717034 (or 1717030 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 140163878920 in words is "one hundred forty billion, one hundred sixty-three million, eight hundred seventy-eight thousand, nine hundred twenty".