16020540057415 has 4 divisors (see below), whose sum is σ = 19224648068904. Its totient is φ = 12816432045928.

The previous prime is 16020540057383. The next prime is 16020540057427. The reversal of 16020540057415 is 51475004502061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16020540057415 - 2⁵ = 16020540057383 is a prime.

It is a super-2 number, since 2×16020540057415² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1602054005737 + ... + 1602054005746.

It is an arithmetic number, because the mean of its divisors is an integer number (4806162017226).

Almost surely, 2^{16020540057415} is an apocalyptic number.

16020540057415 is a deficient number, since it is larger than the sum of its proper divisors (3204108011489).

16020540057415 is an equidigital number, since it uses as much as digits as its factorization.

16020540057415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3204108011488.

The product of its (nonzero) digits is 168000, while the sum is 40.

Adding to 16020540057415 its reverse (51475004502061), we get a palindrome (67495544559476).

The spelling of 16020540057415 in words is "sixteen trillion, twenty billion, five hundred forty million, fifty-seven thousand, four hundred fifteen".