7561126280 has 64 divisors (see below), whose sum is σ = 17444697840. Its totient is φ = 2948355072.

The previous prime is 7561126241. The next prime is 7561126301. The reversal of 7561126280 is 826211657.

It can be written as a sum of positive squares in 8 ways, for example, as 2692156996 + 4868969284 = 51886^2 + 69778^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321482 + ... + 344198.

Almost surely, 2^7561126280 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 7561126280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8722348920).

7561126280 is an abundant number, since it is smaller than the sum of its proper divisors (9883571560).

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

7561126280 is a wasteful number, since it uses less digits than its factorization.

7561126280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22938 (or 22934 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 7561126280 is about 86954.7369612490. The cubic root of 7561126280 is about 1962.7372452038.

The spelling of 7561126280 in words is "seven billion, five hundred sixty-one million, one hundred twenty-six thousand, two hundred eighty".