146031420223621 has 4 divisors (see below), whose sum is σ = 146200633921152. Its totient is φ = 145862206526092.

The previous prime is 146031420223607. The next prime is 146031420223721. The reversal of 146031420223621 is 126322024130641.

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 146031420223621 - 2³⁵ = 145997060485253 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 (146031420223721) 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, 84606847471 + ... + 84606849196.

It is an arithmetic number, because the mean of its divisors is an integer number (36550158480288).

Almost surely, 2^{146031420223621} is an apocalyptic number.

It is an amenable number.

146031420223621 is a deficient number, since it is larger than the sum of its proper divisors (169213697531).

146031420223621 is an equidigital number, since it uses as much as digits as its factorization.

146031420223621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169213697530.

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 146031420223621 in words is "one hundred forty-six trillion, thirty-one billion, four hundred twenty million, two hundred twenty-three thousand, six hundred twenty-one".