8061551424 has 84 divisors (see below), whose sum is σ = 23143447236. Its totient is φ = 2682943488.

The previous prime is 8061551423. The next prime is 8061551483. The reversal of 8061551424 is 4241551608.

It is a happy number.

8061551424 is a `hidden beast` number, since 8 + 0 + 61 + 551 + 42 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1177862400 + 6883689024 = 34320^2 + 82968^2 .

It is a super-2 number, since 2×8061551424² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8061551423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 365412 + ... + 386844.

It is an arithmetic number, because the mean of its divisors is an integer number (275517229).

Almost surely, 2^8061551424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8061551424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11571723618).

8061551424 is an abundant number, since it is smaller than the sum of its proper divisors (15081895812).

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

8061551424 is a wasteful number, since it uses less digits than its factorization.

8061551424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22104 (or 22091 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 8061551424 is about 89786.1427170140. The cubic root of 8061551424 is about 2005.1161864914.

The spelling of 8061551424 in words is "eight billion, sixty-one million, five hundred fifty-one thousand, four hundred twenty-four".