140202020581 has 8 divisors (see below), whose sum is σ = 161400450240. Its totient is φ = 119295983328.

The previous prime is 140202020561. The next prime is 140202020599. The reversal of 140202020581 is 185020202041.

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 140202020581 - 2⁵ = 140202020549 is a prime.

It is a super-2 number, since 2×140202020581² (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 (140202020551) 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, 73097071 + ... + 73098988.

It is an arithmetic number, because the mean of its divisors is an integer number (20175056280).

Almost surely, 2^140202020581 is an apocalyptic number.

It is an amenable number.

140202020581 is a deficient number, since it is larger than the sum of its proper divisors (21198429659).

140202020581 is a wasteful number, since it uses less digits than its factorization.

140202020581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146196203.

The product of its (nonzero) digits is 1280, while the sum is 25.

The spelling of 140202020581 in words is "one hundred forty billion, two hundred two million, twenty thousand, five hundred eighty-one".