13621144461 has 8 divisors (see below), whose sum is σ = 18162066240. Its totient is φ = 9080492832.

The previous prime is 13621144423. The next prime is 13621144469. The reversal of 13621144461 is 16444112631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13621144461 - 2¹⁴ = 13621128077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13621144469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152905 + ... + 224993.

It is an arithmetic number, because the mean of its divisors is an integer number (2270258280).

Almost surely, 2^13621144461 is an apocalyptic number.

It is an amenable number.

13621144461 is a deficient number, since it is larger than the sum of its proper divisors (4540921779).

13621144461 is an equidigital number, since it uses as much as digits as its factorization.

13621144461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135075.

The product of its digits is 13824, while the sum is 33.

The spelling of 13621144461 in words is "thirteen billion, six hundred twenty-one million, one hundred forty-four thousand, four hundred sixty-one".