105145874778 has 32 divisors (see below), whose sum is σ = 240664080384. Its totient is φ = 30000346992.

The previous prime is 105145874749. The next prime is 105145874783. The reversal of 105145874778 is 877478541501.

It is a super-2 number, since 2×105145874778² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1691250 + ... + 1752317.

It is an arithmetic number, because the mean of its divisors is an integer number (7520752512).

Almost surely, 2^105145874778 is an apocalyptic number.

105145874778 is an abundant number, since it is smaller than the sum of its proper divisors (135518205606).

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

105145874778 is a wasteful number, since it uses less digits than its factorization.

105145874778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3444306.

The product of its (nonzero) digits is 8780800, while the sum is 57.

The spelling of 105145874778 in words is "one hundred five billion, one hundred forty-five million, eight hundred seventy-four thousand, seven hundred seventy-eight".