13500413621 has 16 divisors (see below), whose sum is σ = 14172738048. Its totient is φ = 12846364800.

The previous prime is 13500413617. The next prime is 13500413651. The reversal of 13500413621 is 12631400531.

It is a cyclic number.

It is not a de Polignac number, because 13500413621 - 2² = 13500413617 is a prime.

It is a super-2 number, since 2×13500413621² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13500413651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 552656 + ... + 576566.

It is an arithmetic number, because the mean of its divisors is an integer number (885796128).

Almost surely, 2^13500413621 is an apocalyptic number.

It is an amenable number.

13500413621 is a deficient number, since it is larger than the sum of its proper divisors (672324427).

13500413621 is a wasteful number, since it uses less digits than its factorization.

13500413621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24292.

The product of its (nonzero) digits is 2160, while the sum is 26.

The spelling of 13500413621 in words is "thirteen billion, five hundred million, four hundred thirteen thousand, six hundred twenty-one".