140371583981 has 8 divisors (see below), whose sum is σ = 146549819904. Its totient is φ = 134199608400.

The previous prime is 140371583977. The next prime is 140371583987. The reversal of 140371583981 is 189385173041.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140371583981 - 2² = 140371583977 is a prime.

It is a super-2 number, since 2×140371583981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140371583987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1519226 + ... + 1608971.

It is an arithmetic number, because the mean of its divisors is an integer number (18318727488).

Almost surely, 2^140371583981 is an apocalyptic number.

It is an amenable number.

140371583981 is a deficient number, since it is larger than the sum of its proper divisors (6178235923).

140371583981 is a wasteful number, since it uses less digits than its factorization.

140371583981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3130171.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 140371583981 in words is "one hundred forty billion, three hundred seventy-one million, five hundred eighty-three thousand, nine hundred eighty-one".