78958485987 has 8 divisors (see below), whose sum is σ = 105297937680. Its totient is φ = 52629012480.

The previous prime is 78958485967. The next prime is 78958486037.

78958485987 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78958485987 - 2¹⁵ = 78958453219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78958485917) 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 7 ways as a sum of consecutive naturals, for example, 2476062 + ... + 2507747.

It is an arithmetic number, because the mean of its divisors is an integer number (13162242210).

Almost surely, 2^78958485987 is an apocalyptic number.

78958485987 is a deficient number, since it is larger than the sum of its proper divisors (26339451693).

78958485987 is a wasteful number, since it uses less digits than its factorization.

78958485987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4989093.

The product of its digits is 1625702400, while the sum is 78.

The spelling of 78958485987 in words is "seventy-eight billion, nine hundred fifty-eight million, four hundred eighty-five thousand, nine hundred eighty-seven".