132400566161621 has 4 divisors (see below), whose sum is σ = 132427714119372. Its totient is φ = 132373418203872.

The previous prime is 132400566161599. The next prime is 132400566161681. The reversal of 132400566161621 is 126161665004231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 100295718300625 + 32104847860996 = 10014775^2 + 5666114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-132400566161621 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 (132400566161681) 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, 13573971560 + ... + 13573981313.

It is an arithmetic number, because the mean of its divisors is an integer number (33106928529843).

Almost surely, 2^{132400566161621} is an apocalyptic number.

It is an amenable number.

132400566161621 is a deficient number, since it is larger than the sum of its proper divisors (27147957751).

132400566161621 is an equidigital number, since it uses as much as digits as its factorization.

132400566161621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27147957750.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 132400566161621 in words is "one hundred thirty-two trillion, four hundred billion, five hundred sixty-six million, one hundred sixty-one thousand, six hundred twenty-one".