140878649988 has 36 divisors (see below), whose sum is σ = 356134641408. Its totient is φ = 46956290160.

The previous prime is 140878649981. The next prime is 140878650013. The reversal of 140878649988 is 889946878041.

It is a happy number.

140878649988 is a `hidden beast` number, since 1 + 408 + 78 + 64 + 9 + 98 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (140878649981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 421273 + ... + 677663.

It is an arithmetic number, because the mean of its divisors is an integer number (9892628928).

Almost surely, 2^140878649988 is an apocalyptic number.

140878649988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

140878649988 is an abundant number, since it is smaller than the sum of its proper divisors (215255991420).

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

140878649988 is a wasteful number, since it uses less digits than its factorization.

140878649988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271664 (or 271659 counting only the distinct ones).

The product of its (nonzero) digits is 222953472, while the sum is 72.

The spelling of 140878649988 in words is "one hundred forty billion, eight hundred seventy-eight million, six hundred forty-nine thousand, nine hundred eighty-eight".