105759978978 has 32 divisors (see below), whose sum is σ = 223986482496. Its totient is φ = 33176019968.

The previous prime is 105759978911. The next prime is 105759979009. The reversal of 105759978978 is 879879957501.

It is a super-2 number, since 2×105759978978² (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, 988825 + ... + 1090547.

It is an arithmetic number, because the mean of its divisors is an integer number (6999577578).

Almost surely, 2^105759978978 is an apocalyptic number.

105759978978 is an abundant number, since it is smaller than the sum of its proper divisors (118226503518).

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

105759978978 is a wasteful number, since it uses less digits than its factorization.

105759978978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111938.

The product of its (nonzero) digits is 400075200, while the sum is 75.

The spelling of 105759978978 in words is "one hundred five billion, seven hundred fifty-nine million, nine hundred seventy-eight thousand, nine hundred seventy-eight".