7561780568 has 16 divisors (see below), whose sum is σ = 14183074080. Its totient is φ = 3779627488.

The previous prime is 7561780529. The next prime is 7561780573. The reversal of 7561780568 is 8650871657.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132155 + ... + 180522.

It is an arithmetic number, because the mean of its divisors is an integer number (886442130).

Almost surely, 2^7561780568 is an apocalyptic number.

It is an amenable number.

7561780568 is a deficient number, since it is larger than the sum of its proper divisors (6621293512).

7561780568 is a wasteful number, since it uses less digits than its factorization.

7561780568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315706 (or 315702 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 53.

The square root of 7561780568 is about 86958.4991130827. The cubic root of 7561780568 is about 1962.7938575099.

The spelling of 7561780568 in words is "seven billion, five hundred sixty-one million, seven hundred eighty thousand, five hundred sixty-eight".