16642534136415 has 128 divisors (see below), whose sum is σ = 30704394470400. Its totient is φ = 7612794224640.

The previous prime is 16642534136357. The next prime is 16642534136441. The reversal of 16642534136415 is 51463143524661.

It is not a de Polignac number, because 16642534136415 - 2⁸ = 16642534136159 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 881994601 + ... + 882013469.

It is an arithmetic number, because the mean of its divisors is an integer number (239878081800).

Almost surely, 2^{16642534136415} is an apocalyptic number.

16642534136415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16642534136415 is a deficient number, since it is larger than the sum of its proper divisors (14061860333985).

16642534136415 is a wasteful number, since it uses less digits than its factorization.

16642534136415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20057.

The product of its digits is 6220800, while the sum is 51.

The spelling of 16642534136415 in words is "sixteen trillion, six hundred forty-two billion, five hundred thirty-four million, one hundred thirty-six thousand, four hundred fifteen".