16488642456405 has 24 divisors (see below), whose sum is σ = 32663215533312. Its totient is φ = 7537665122784.

The previous prime is 16488642456361. The next prime is 16488642456413. The reversal of 16488642456405 is 50465424688461.

16488642456405 is a `hidden beast` number, since 1 + 6 + 4 + 8 + 8 + 64 + 2 + 4 + 564 + 0 + 5 = 666.

It is not a de Polignac number, because 16488642456405 - 2¹⁰ = 16488642455381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26172448029 + ... + 26172448658.

It is an arithmetic number, because the mean of its divisors is an integer number (1360967313888).

Almost surely, 2^{16488642456405} is an apocalyptic number.

16488642456405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16488642456405 is a deficient number, since it is larger than the sum of its proper divisors (16174573076907).

16488642456405 is a wasteful number, since it uses less digits than its factorization.

16488642456405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52344896705 (or 52344896702 counting only the distinct ones).

The product of its (nonzero) digits is 176947200, while the sum is 63.

The spelling of 16488642456405 in words is "sixteen trillion, four hundred eighty-eight billion, six hundred forty-two million, four hundred fifty-six thousand, four hundred five".