140155440121531 has 8 divisors (see below), whose sum is σ = 140956611397280. Its totient is φ = 139355041807872.

The previous prime is 140155440121481. The next prime is 140155440121549. The reversal of 140155440121531 is 135121044551041.

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 140155440121531 - 2²³ = 140155431732923 is a prime.

It is a super-2 number, since 2×140155440121531² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140155420121531) 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, 192876840 + ... + 193602133.

It is an arithmetic number, because the mean of its divisors is an integer number (17619576424660).

Almost surely, 2^{140155440121531} is an apocalyptic number.

140155440121531 is a deficient number, since it is larger than the sum of its proper divisors (801171275749).

140155440121531 is a wasteful number, since it uses less digits than its factorization.

140155440121531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386481045.

The product of its (nonzero) digits is 48000, while the sum is 37.

Adding to 140155440121531 its reverse (135121044551041), we get a palindrome (275276484672572).

The spelling of 140155440121531 in words is "one hundred forty trillion, one hundred fifty-five billion, four hundred forty million, one hundred twenty-one thousand, five hundred thirty-one".