146721430621 has 16 divisors (see below), whose sum is σ = 156620320000. Its totient is φ = 137045203776.

The previous prime is 146721430591. The next prime is 146721430637. The reversal of 146721430621 is 126034127641.

It is a cyclic number.

It is not a de Polignac number, because 146721430621 - 2²³ = 146713042013 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 (146721400621) 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, 995275 + ... + 1133143.

It is an arithmetic number, because the mean of its divisors is an integer number (9788770000).

Almost surely, 2^146721430621 is an apocalyptic number.

It is an amenable number.

146721430621 is a deficient number, since it is larger than the sum of its proper divisors (9898889379).

146721430621 is a wasteful number, since it uses less digits than its factorization.

146721430621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138676.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 146721430621 in words is "one hundred forty-six billion, seven hundred twenty-one million, four hundred thirty thousand, six hundred twenty-one".