78258530250528 has 24 divisors (see below), whose sum is σ = 205428641907888. Its totient is φ = 26086176750144.

The previous prime is 78258530250469. The next prime is 78258530250533. The reversal of 78258530250528 is 82505203585287.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×78258530250528² (a number of 29 digits) contains 22 as substring.

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, 407596511626 + ... + 407596511817.

It is an arithmetic number, because the mean of its divisors is an integer number (8559526746162).

Almost surely, 2^{78258530250528} is an apocalyptic number.

It is an amenable number.

78258530250528 is an abundant number, since it is smaller than the sum of its proper divisors (127170111657360).

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

78258530250528 is a wasteful number, since it uses less digits than its factorization.

78258530250528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815193023456 (or 815193023448 counting only the distinct ones).

The product of its (nonzero) digits is 53760000, while the sum is 60.

The spelling of 78258530250528 in words is "seventy-eight trillion, two hundred fifty-eight billion, five hundred thirty million, two hundred fifty thousand, five hundred twenty-eight".