7800521016 has 32 divisors (see below), whose sum is σ = 19513128960. Its totient is φ = 2598596832.

The previous prime is 7800521011. The next prime is 7800521033. The reversal of 7800521016 is 6101250087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7800521011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57810 + ... + 137633.

It is an arithmetic number, because the mean of its divisors is an integer number (609785280).

Almost surely, 2^7800521016 is an apocalyptic number.

It is an amenable number.

7800521016 is an abundant number, since it is smaller than the sum of its proper divisors (11712607944).

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

7800521016 is a wasteful number, since it uses less digits than its factorization.

7800521016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197115 (or 197111 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 7800521016 is about 88320.5582862790. The cubic root of 7800521016 is about 1983.2366387495.

The spelling of 7800521016 in words is "seven billion, eight hundred million, five hundred twenty-one thousand, sixteen".