140390999685 has 32 divisors (see below), whose sum is σ = 253309150080. Its totient is φ = 73757654784.

The previous prime is 140390999681. The next prime is 140390999699. The reversal of 140390999685 is 586999093041.

140390999685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 140390999685 - 2² = 140390999681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140390999681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7751652 + ... + 7769741.

It is an arithmetic number, because the mean of its divisors is an integer number (7915910940).

Almost surely, 2^140390999685 is an apocalyptic number.

140390999685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140390999685 is a deficient number, since it is larger than the sum of its proper divisors (112918150395).

140390999685 is a wasteful number, since it uses less digits than its factorization.

140390999685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15521474 (or 15521468 counting only the distinct ones).

The product of its (nonzero) digits is 18895680, while the sum is 63.

The spelling of 140390999685 in words is "one hundred forty billion, three hundred ninety million, nine hundred ninety-nine thousand, six hundred eighty-five".