263828868978 has 32 divisors (see below), whose sum is σ = 558851844096. Its totient is φ = 82746816768.

The previous prime is 263828868931. The next prime is 263828869009. The reversal of 263828868978 is 879868828362.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10575 + ... + 726477.

It is an arithmetic number, because the mean of its divisors is an integer number (17464120128).

Almost surely, 2^263828868978 is an apocalyptic number.

263828868978 is an abundant number, since it is smaller than the sum of its proper divisors (295022975118).

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

263828868978 is a wasteful number, since it uses less digits than its factorization.

263828868978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719538.

The product of its digits is 891813888, while the sum is 75.

The spelling of 263828868978 in words is "two hundred sixty-three billion, eight hundred twenty-eight million, eight hundred sixty-eight thousand, nine hundred seventy-eight".