20152515502045 has 8 divisors (see below), whose sum is σ = 24184117313496. Its totient is φ = 16121279927616.

The previous prime is 20152515502003. The next prime is 20152515502177. The reversal of 20152515502045 is 54020551525102.

It can be written as a sum of positive squares in 4 ways, for example, as 5722864847001 + 14429650655044 = 2392251^2 + 3798638^2 .

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 20152515502045 - 2⁷ = 20152515501917 is a prime.

It is a super-2 number, since 2×20152515502045² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20152515501995 and 20152515502013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91438182 + ... + 91658311.

It is an arithmetic number, because the mean of its divisors is an integer number (3023014664187).

Almost surely, 2^{20152515502045} is an apocalyptic number.

It is an amenable number.

20152515502045 is a deficient number, since it is larger than the sum of its proper divisors (4031601811451).

20152515502045 is a wasteful number, since it uses less digits than its factorization.

20152515502045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183118511.

The product of its (nonzero) digits is 100000, while the sum is 37.

The spelling of 20152515502045 in words is "twenty trillion, one hundred fifty-two billion, five hundred fifteen million, five hundred two thousand, forty-five".