16540146217 has 8 divisors (see below), whose sum is σ = 18909025856. Its totient is φ = 14172766992.

The previous prime is 16540146197. The next prime is 16540146221. The reversal of 16540146217 is 71264104561.

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

It is a cyclic number.

It is not a de Polignac number, because 16540146217 - 2¹⁵ = 16540113449 is a prime.

It is a super-2 number, since 2×16540146217² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16540176217) 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, 351378 + ... + 395659.

It is an arithmetic number, because the mean of its divisors is an integer number (2363628232).

Almost surely, 2^16540146217 is an apocalyptic number.

It is an amenable number.

16540146217 is a deficient number, since it is larger than the sum of its proper divisors (2368879639).

16540146217 is an equidigital number, since it uses as much as digits as its factorization.

16540146217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750207.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 16540146217 in words is "sixteen billion, five hundred forty million, one hundred forty-six thousand, two hundred seventeen".