20012550415 has 32 divisors (see below), whose sum is σ = 28813833216. Its totient is φ = 13149125760.

The previous prime is 20012550391. The next prime is 20012550421. The reversal of 20012550415 is 51405521002.

It is a de Polignac number, because none of the positive numbers 2^k-20012550415 is a prime.

It is a super-2 number, since 2×20012550415² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20012550415.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 264157 + ... + 331366.

It is an arithmetic number, because the mean of its divisors is an integer number (900432288).

Almost surely, 2^20012550415 is an apocalyptic number.

20012550415 is a deficient number, since it is larger than the sum of its proper divisors (8801282801).

20012550415 is a wasteful number, since it uses less digits than its factorization.

20012550415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595599.

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 20012550415 in words is "twenty billion, twelve million, five hundred fifty thousand, four hundred fifteen".