140155055551021 has 16 divisors (see below), whose sum is σ = 172473960977280. Its totient is φ = 111149885952000.

The previous prime is 140155055551013. The next prime is 140155055551031. The reversal of 140155055551021 is 120155550551041.

It is not a de Polignac number, because 140155055551021 - 2³ = 140155055551013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140155055551001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9981124980 + ... + 9981139021.

It is an arithmetic number, because the mean of its divisors is an integer number (10779622561080).

Almost surely, 2^{140155055551021} is an apocalyptic number.

It is an amenable number.

140155055551021 is a deficient number, since it is larger than the sum of its proper divisors (32318905426259).

140155055551021 is a wasteful number, since it uses less digits than its factorization.

140155055551021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19962264084.

The product of its (nonzero) digits is 125000, while the sum is 40.

The spelling of 140155055551021 in words is "one hundred forty trillion, one hundred fifty-five billion, fifty-five million, five hundred fifty-one thousand, twenty-one".