20015416290 has 128 divisors (see below), whose sum is σ = 50346196992. Its totient is φ = 5086748160.

The previous prime is 20015416279. The next prime is 20015416303. The reversal of 20015416290 is 9261451002.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21360702 + ... + 21361638.

It is an arithmetic number, because the mean of its divisors is an integer number (393329664).

Almost surely, 2^20015416290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20015416290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25173098496).

20015416290 is an abundant number, since it is smaller than the sum of its proper divisors (30330780702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20015416290 is a wasteful number, since it uses less digits than its factorization.

20015416290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304.

The product of its (nonzero) digits is 4320, while the sum is 30.

Adding to 20015416290 its reverse (9261451002), we get a palindrome (29276867292).

The spelling of 20015416290 in words is "twenty billion, fifteen million, four hundred sixteen thousand, two hundred ninety".