140551157621 has 4 divisors (see below), whose sum is σ = 160629894432. Its totient is φ = 120472420812.

The previous prime is 140551157609. The next prime is 140551157629. The reversal of 140551157621 is 126751155041.

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 not a de Polignac number, because 140551157621 - 2³⁰ = 139477415797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140551157629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10039368395 + ... + 10039368408.

It is an arithmetic number, because the mean of its divisors is an integer number (40157473608).

Almost surely, 2^140551157621 is an apocalyptic number.

It is an amenable number.

140551157621 is a deficient number, since it is larger than the sum of its proper divisors (20078736811).

140551157621 is an equidigital number, since it uses as much as digits as its factorization.

140551157621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20078736810.

The product of its (nonzero) digits is 42000, while the sum is 38.

The spelling of 140551157621 in words is "one hundred forty billion, five hundred fifty-one million, one hundred fifty-seven thousand, six hundred twenty-one".