140354551021 has 16 divisors (see below), whose sum is σ = 145305425664. Its totient is φ = 135490964224.

The previous prime is 140354551013. The next prime is 140354551031. The reversal of 140354551021 is 120155453041.

It is a cyclic number.

It is not a de Polignac number, because 140354551021 - 2³ = 140354551013 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 (140354551031) 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, 2377761 + ... + 2436073.

It is an arithmetic number, because the mean of its divisors is an integer number (9081589104).

Almost surely, 2^140354551021 is an apocalyptic number.

It is an amenable number.

140354551021 is a deficient number, since it is larger than the sum of its proper divisors (4950874643).

140354551021 is an equidigital number, since it uses as much as digits as its factorization.

140354551021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59060.

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 140354551021 in words is "one hundred forty billion, three hundred fifty-four million, five hundred fifty-one thousand, twenty-one".