16407443485257 has 16 divisors (see below), whose sum is σ = 23866574552832. Its totient is φ = 9943404221520.

The previous prime is 16407443485249. The next prime is 16407443485267. The reversal of 16407443485257 is 75258434470461.

It is a happy number.

It is not a de Polignac number, because 16407443485257 - 2³ = 16407443485249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16407443485257.

It is not an unprimeable number, because it can be changed into a prime (16407443485267) 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, 11857483 + ... + 13168704.

It is an arithmetic number, because the mean of its divisors is an integer number (1491660909552).

Almost surely, 2^{16407443485257} is an apocalyptic number.

It is an amenable number.

16407443485257 is a deficient number, since it is larger than the sum of its proper divisors (7459131067575).

16407443485257 is a wasteful number, since it uses less digits than its factorization.

16407443485257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25046068.

The product of its (nonzero) digits is 90316800, while the sum is 60.

The spelling of 16407443485257 in words is "sixteen trillion, four hundred seven billion, four hundred forty-three million, four hundred eighty-five thousand, two hundred fifty-seven".