20550533415 has 16 divisors (see below), whose sum is σ = 33003093600. Its totient is φ = 10919537792.

The previous prime is 20550533401. The next prime is 20550533417. The reversal of 20550533415 is 51433505502.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20550533415 - 2⁷ = 20550533287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20550533417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2542500 + ... + 2550569.

It is an arithmetic number, because the mean of its divisors is an integer number (2062693350).

Almost surely, 2^20550533415 is an apocalyptic number.

20550533415 is a deficient number, since it is larger than the sum of its proper divisors (12452560185).

20550533415 is a wasteful number, since it uses less digits than its factorization.

20550533415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5093346.

The product of its (nonzero) digits is 45000, while the sum is 33.

The spelling of 20550533415 in words is "twenty billion, five hundred fifty million, five hundred thirty-three thousand, four hundred fifteen".