13521663454 has 32 divisors (see below), whose sum is σ = 22222640160. Its totient is φ = 6132412800.

The previous prime is 13521663409. The next prime is 13521663469. The reversal of 13521663454 is 45436612531.

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, 1869457 + ... + 1876675.

It is an arithmetic number, because the mean of its divisors is an integer number (694457505).

Almost surely, 2^13521663454 is an apocalyptic number.

13521663454 is a deficient number, since it is larger than the sum of its proper divisors (8700976706).

13521663454 is a wasteful number, since it uses less digits than its factorization.

13521663454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8476.

The product of its digits is 259200, while the sum is 40.

The spelling of 13521663454 in words is "thirteen billion, five hundred twenty-one million, six hundred sixty-three thousand, four hundred fifty-four".