13621446465 has 32 divisors (see below), whose sum is σ = 25026969600. Its totient is φ = 6256739520.

The previous prime is 13621446463. The next prime is 13621446497. The reversal of 13621446465 is 56464412631.

It is not a de Polignac number, because 13621446465 - 2¹ = 13621446463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13621446463) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2169345 + ... + 2175614.

It is an arithmetic number, because the mean of its divisors is an integer number (782092800).

Almost surely, 2^13621446465 is an apocalyptic number.

13621446465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13621446465 is a deficient number, since it is larger than the sum of its proper divisors (11405523135).

13621446465 is a wasteful number, since it uses less digits than its factorization.

13621446465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4344997.

The product of its digits is 414720, while the sum is 42.

The spelling of 13621446465 in words is "thirteen billion, six hundred twenty-one million, four hundred forty-six thousand, four hundred sixty-five".