86978905263 has 12 divisors (see below), whose sum is σ = 126184829160. Its totient is φ = 57732721776.

The previous prime is 86978905243. The next prime is 86978905267. The reversal of 86978905263 is 36250987968.

It is not a de Polignac number, because 86978905263 - 2⁵ = 86978905231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86978905263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86978905267) 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, 21099081 + ... + 21103202.

It is an arithmetic number, because the mean of its divisors is an integer number (10515402430).

Almost surely, 2^86978905263 is an apocalyptic number.

86978905263 is a deficient number, since it is larger than the sum of its proper divisors (39205923897).

86978905263 is a wasteful number, since it uses less digits than its factorization.

86978905263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42202518 (or 42202515 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 86978905263 in words is "eighty-six billion, nine hundred seventy-eight million, nine hundred five thousand, two hundred sixty-three".