70782369987 has 48 divisors (see below), whose sum is σ = 110711556000. Its totient is φ = 40106626560.

The previous prime is 70782369979. The next prime is 70782369989. The reversal of 70782369987 is 78996328707.

It is not a de Polignac number, because 70782369987 - 2³ = 70782369979 is a prime.

It is a hoax number, since the sum of its digits (66) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (70782369989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14475439 + ... + 14480327.

It is an arithmetic number, because the mean of its divisors is an integer number (2306490750).

Almost surely, 2^70782369987 is an apocalyptic number.

70782369987 is a deficient number, since it is larger than the sum of its proper divisors (39929186013).

70782369987 is a wasteful number, since it uses less digits than its factorization.

70782369987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5716 (or 5709 counting only the distinct ones).

The product of its (nonzero) digits is 64012032, while the sum is 66.

The spelling of 70782369987 in words is "seventy billion, seven hundred eighty-two million, three hundred sixty-nine thousand, nine hundred eighty-seven".