78005580527 has 12 divisors (see below), whose sum is σ = 90902392056. Its totient is φ = 66743142480.

The previous prime is 78005580461. The next prime is 78005580529. The reversal of 78005580527 is 72508550087.

It is a de Polignac number, because none of the positive numbers 2^k-78005580527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78005580529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1386224 + ... + 1441397.

It is an arithmetic number, because the mean of its divisors is an integer number (7575199338).

Almost surely, 2^78005580527 is an apocalyptic number.

78005580527 is a deficient number, since it is larger than the sum of its proper divisors (12896811529).

78005580527 is a wasteful number, since it uses less digits than its factorization.

78005580527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2828198 (or 2828191 counting only the distinct ones).

The product of its (nonzero) digits is 784000, while the sum is 47.

The spelling of 78005580527 in words is "seventy-eight billion, five million, five hundred eighty thousand, five hundred twenty-seven".