20412545215 has 16 divisors (see below), whose sum is σ = 25793964000. Its totient is φ = 15464742912.

The previous prime is 20412545189. The next prime is 20412545261. The reversal of 20412545215 is 51254521402.

It is a cyclic number.

It is not a de Polignac number, because 20412545215 - 2¹⁹ = 20412020927 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222511 + ... + 300559.

It is an arithmetic number, because the mean of its divisors is an integer number (1612122750).

Almost surely, 2^20412545215 is an apocalyptic number.

20412545215 is a deficient number, since it is larger than the sum of its proper divisors (5381418785).

20412545215 is a wasteful number, since it uses less digits than its factorization.

20412545215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80826.

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 20412545215 in words is "twenty billion, four hundred twelve million, five hundred forty-five thousand, two hundred fifteen".