78810064560 has 100 divisors (see below), whose sum is σ = 273719052288. Its totient is φ = 21016015488.

The previous prime is 78810064559. The next prime is 78810064573. The reversal of 78810064560 is 6546001887.

It is a happy number.

78810064560 is a `hidden beast` number, since 7 + 8 + 81 + 0 + 0 + 6 + 4 + 560 = 666.

It is a super-2 number, since 2×78810064560² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6074544 + ... + 6087503.

Almost surely, 2^78810064560 is an apocalyptic number.

It is an amenable number.

78810064560 is an abundant number, since it is smaller than the sum of its proper divisors (194908987728).

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

78810064560 is a wasteful number, since it uses less digits than its factorization.

78810064560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12162072 (or 12162057 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 78810064560 in words is "seventy-eight billion, eight hundred ten million, sixty-four thousand, five hundred sixty".