146366161621 has 16 divisors (see below), whose sum is σ = 159673632048. Its totient is φ = 133619507200.

The previous prime is 146366161619. The next prime is 146366161633. The reversal of 146366161621 is 126161663641.

It can be written as a sum of positive squares in 8 ways, for example, as 2202424900 + 144163736721 = 46930^2 + 379689^2 .

It is a cyclic number.

It is not a de Polignac number, because 146366161621 - 2¹ = 146366161619 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 (146366161661) 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, 486340 + ... + 727501.

It is an arithmetic number, because the mean of its divisors is an integer number (9979602003).

Almost surely, 2^146366161621 is an apocalyptic number.

It is an amenable number.

146366161621 is a deficient number, since it is larger than the sum of its proper divisors (13307470427).

146366161621 is a wasteful number, since it uses less digits than its factorization.

146366161621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214072.

The product of its digits is 186624, while the sum is 43.

The spelling of 146366161621 in words is "one hundred forty-six billion, three hundred sixty-six million, one hundred sixty-one thousand, six hundred twenty-one".