20115061344 has 288 divisors, whose sum is σ = 69375247200. Its totient is φ = 5652218880.

The previous prime is 20115061319. The next prime is 20115061427. The reversal of 20115061344 is 44316051102.

It is a happy number.

20115061344 is a `hidden beast` number, since 2 + 0 + 1 + 1 + 5 + 0 + 613 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (27).

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 47 ways as a sum of consecutive naturals, for example, 2578602 + ... + 2586390.

It is an arithmetic number, because the mean of its divisors is an integer number (240886275).

Almost surely, 2^20115061344 is an apocalyptic number.

20115061344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20115061344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34687623600).

20115061344 is an abundant number, since it is smaller than the sum of its proper divisors (49260185856).

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

20115061344 is a wasteful number, since it uses less digits than its factorization.

20115061344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7883 (or 7862 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The spelling of 20115061344 in words is "twenty billion, one hundred fifteen million, sixty-one thousand, three hundred forty-four".