78535481631587 has 16 divisors (see below), whose sum is σ = 82124515123200. Its totient is φ = 75013115130720.

The previous prime is 78535481631571. The next prime is 78535481631589. The reversal of 78535481631587 is 78513618453587.

It is a cyclic number.

It is not a de Polignac number, because 78535481631587 - 2⁴ = 78535481631571 is a prime.

It is a super-2 number, since 2×78535481631587² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78535481631587.

It is not an unprimeable number, because it can be changed into a prime (78535481631589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1081178 + ... + 12579344.

It is an arithmetic number, because the mean of its divisors is an integer number (5132782195200).

Almost surely, 2^{78535481631587} is an apocalyptic number.

78535481631587 is a deficient number, since it is larger than the sum of its proper divisors (3589033491613).

78535481631587 is a wasteful number, since it uses less digits than its factorization.

78535481631587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11501066.

The product of its digits is 677376000, while the sum is 71.

The spelling of 78535481631587 in words is "seventy-eight trillion, five hundred thirty-five billion, four hundred eighty-one million, six hundred thirty-one thousand, five hundred eighty-seven".