16454500461405 has 20 divisors (see below), whose sum is σ = 29496215642652. Its totient is φ = 8775733579200.

The previous prime is 16454500461401. The next prime is 16454500461431. The reversal of 16454500461405 is 50416400545461.

16454500461405 is a `hidden beast` number, since 1 + 6 + 4 + 545 + 0 + 0 + 4 + 61 + 40 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6694737081561 + 9759763379844 = 2587419^2 + 3124062^2 .

It is not a de Polignac number, because 16454500461405 - 2² = 16454500461401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16454500461401) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20314197696 + ... + 20314198505.

Almost surely, 2^{16454500461405} is an apocalyptic number.

16454500461405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16454500461405 is a deficient number, since it is larger than the sum of its proper divisors (13041715181247).

16454500461405 is an equidigital number, since it uses as much as digits as its factorization.

16454500461405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40628396218 (or 40628396209 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 45.

The spelling of 16454500461405 in words is "sixteen trillion, four hundred fifty-four billion, five hundred million, four hundred sixty-one thousand, four hundred five".