140744981897821 has 8 divisors (see below), whose sum is σ = 160865835401600. Its totient is φ = 120627735273648.

The previous prime is 140744981897813. The next prime is 140744981897881. The reversal of 140744981897821 is 128798189447041.

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 140744981897821 - 2³ = 140744981897813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140744981897881) 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, 901636281 + ... + 901792366.

It is an arithmetic number, because the mean of its divisors is an integer number (20108229425200).

Almost surely, 2^{140744981897821} is an apocalyptic number.

It is an amenable number.

140744981897821 is a deficient number, since it is larger than the sum of its proper divisors (20120853503779).

140744981897821 is a wasteful number, since it uses less digits than its factorization.

140744981897821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803439803.

The product of its (nonzero) digits is 260112384, while the sum is 73.

The spelling of 140744981897821 in words is "one hundred forty trillion, seven hundred forty-four billion, nine hundred eighty-one million, eight hundred ninety-seven thousand, eight hundred twenty-one".