105978955027 has 4 divisors (see below), whose sum is σ = 115613405496. Its totient is φ = 96344504560.

The previous prime is 105978954971. The next prime is 105978955063. The reversal of 105978955027 is 720559879501.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105978955027 is a prime.

It is a super-2 number, since 2×105978955027² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105978955087) by changing a digit.

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, 4817225218 + ... + 4817225239.

It is an arithmetic number, because the mean of its divisors is an integer number (28903351374).

Almost surely, 2^105978955027 is an apocalyptic number.

105978955027 is a deficient number, since it is larger than the sum of its proper divisors (9634450469).

105978955027 is an equidigital number, since it uses as much as digits as its factorization.

105978955027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9634450468.

The product of its (nonzero) digits is 7938000, while the sum is 58.

The spelling of 105978955027 in words is "one hundred five billion, nine hundred seventy-eight million, nine hundred fifty-five thousand, twenty-seven".