7571422768 has 120 divisors (see below), whose sum is σ = 18826607520. Its totient is φ = 2922071040.

The previous prime is 7571422751. The next prime is 7571422769. The reversal of 7571422768 is 8672241757.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (7571422769) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 408813 + ... + 426931.

It is an arithmetic number, because the mean of its divisors is an integer number (156888396).

Almost surely, 2^7571422768 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 7571422768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9413303760).

7571422768 is an abundant number, since it is smaller than the sum of its proper divisors (11255184752).

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

7571422768 is a wasteful number, since it uses less digits than its factorization.

7571422768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18195 (or 18182 counting only the distinct ones).

The product of its digits is 1317120, while the sum is 49.

The square root of 7571422768 is about 87013.9228399685. The cubic root of 7571422768 is about 1963.6277709989.

The spelling of 7571422768 in words is "seven billion, five hundred seventy-one million, four hundred twenty-two thousand, seven hundred sixty-eight".