16318432213457 has 8 divisors (see below), whose sum is σ = 18575922836160. Its totient is φ = 14189941054960.

The previous prime is 16318432213423. The next prime is 16318432213483. The reversal of 16318432213457 is 75431223481361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16318432213457 - 2²⁶ = 16318365104593 is a prime.

It is a super-2 number, since 2×16318432213457² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16318432263457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32249865782 + ... + 32249866287.

It is an arithmetic number, because the mean of its divisors is an integer number (2321990354520).

Almost surely, 2^{16318432213457} is an apocalyptic number.

It is an amenable number.

16318432213457 is a deficient number, since it is larger than the sum of its proper divisors (2257490622703).

16318432213457 is a wasteful number, since it uses less digits than its factorization.

16318432213457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64499732103.

The product of its digits is 2903040, while the sum is 50.

The spelling of 16318432213457 in words is "sixteen trillion, three hundred eighteen billion, four hundred thirty-two million, two hundred thirteen thousand, four hundred fifty-seven".