140033351621 has 4 divisors (see below), whose sum is σ = 144550556544. Its totient is φ = 135516146700.

The previous prime is 140033351603. The next prime is 140033351659. The reversal of 140033351621 is 126153330041.

140033351621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140033351621 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 (140033351321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2258602415 + ... + 2258602476.

It is an arithmetic number, because the mean of its divisors is an integer number (36137639136).

Almost surely, 2^140033351621 is an apocalyptic number.

It is an amenable number.

140033351621 is a deficient number, since it is larger than the sum of its proper divisors (4517204923).

140033351621 is an equidigital number, since it uses as much as digits as its factorization.

140033351621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4517204922.

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 140033351621 its reverse (126153330041), we get a palindrome (266186681662).

The spelling of 140033351621 in words is "one hundred forty billion, thirty-three million, three hundred fifty-one thousand, six hundred twenty-one".