105551078278 has 8 divisors (see below), whose sum is σ = 158446656720. Its totient is φ = 52735526040.

The previous prime is 105551078267. The next prime is 105551078341. The reversal of 105551078278 is 872870155501.

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

It is a super-2 number, since 2×105551078278² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 20003253 + ... + 20008528.

It is an arithmetic number, because the mean of its divisors is an integer number (19805832090).

Almost surely, 2^105551078278 is an apocalyptic number.

105551078278 is a deficient number, since it is larger than the sum of its proper divisors (52895578442).

105551078278 is a wasteful number, since it uses less digits than its factorization.

105551078278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40013102.

The product of its (nonzero) digits is 784000, while the sum is 49.

The spelling of 105551078278 in words is "one hundred five billion, five hundred fifty-one million, seventy-eight thousand, two hundred seventy-eight".