13621144485 has 32 divisors (see below), whose sum is σ = 23506116480. Its totient is φ = 6695555328.

The previous prime is 13621144483. The next prime is 13621144487. The reversal of 13621144485 is 58444112631.

It is an interprime number because it is at equal distance from previous prime (13621144483) and next prime (13621144487).

It is not a de Polignac number, because 13621144485 - 2¹ = 13621144483 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13621144483) 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, 75507 + ... + 181503.

It is an arithmetic number, because the mean of its divisors is an integer number (734566140).

Almost surely, 2^13621144485 is an apocalyptic number.

13621144485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13621144485 is a deficient number, since it is larger than the sum of its proper divisors (9884971995).

13621144485 is a wasteful number, since it uses less digits than its factorization.

13621144485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106677.

The product of its digits is 92160, while the sum is 39.

The spelling of 13621144485 in words is "thirteen billion, six hundred twenty-one million, one hundred forty-four thousand, four hundred eighty-five".