140855979987 has 24 divisors (see below), whose sum is σ = 208838994000. Its totient is φ = 91429931520.

The previous prime is 140855979919. The next prime is 140855979997. The reversal of 140855979987 is 789979558041.

It is a happy number.

140855979987 is a `hidden beast` number, since 1 + 408 + 5 + 59 + 7 + 99 + 87 = 666.

It is not a de Polignac number, because 140855979987 - 2¹¹ = 140855977939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140855979907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198358 + ... + 566619.

It is an arithmetic number, because the mean of its divisors is an integer number (8701624750).

Almost surely, 2^140855979987 is an apocalyptic number.

140855979987 is a deficient number, since it is larger than the sum of its proper divisors (67983014013).

140855979987 is a wasteful number, since it uses less digits than its factorization.

140855979987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765523 (or 765520 counting only the distinct ones).

The product of its (nonzero) digits is 228614400, while the sum is 72.

The spelling of 140855979987 in words is "one hundred forty billion, eight hundred fifty-five million, nine hundred seventy-nine thousand, nine hundred eighty-seven".