13721421632485 has 16 divisors (see below), whose sum is σ = 18916472973312. Its totient is φ = 9359713180800.

The previous prime is 13721421632437. The next prime is 13721421632561. The reversal of 13721421632485 is 58423612412731.

It is a happy number.

It is not a de Polignac number, because 13721421632485 - 2¹⁷ = 13721421501413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1026277656 + ... + 1026291025.

It is an arithmetic number, because the mean of its divisors is an integer number (1182279560832).

Almost surely, 2^{13721421632485} is an apocalyptic number.

It is an amenable number.

13721421632485 is a deficient number, since it is larger than the sum of its proper divisors (5195051340827).

13721421632485 is a wasteful number, since it uses less digits than its factorization.

13721421632485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052568884.

The product of its digits is 1935360, while the sum is 49.

The spelling of 13721421632485 in words is "thirteen trillion, seven hundred twenty-one billion, four hundred twenty-one million, six hundred thirty-two thousand, four hundred eighty-five".