109401857848878 has 64 divisors (see below), whose sum is σ = 263374406807040. Its totient is φ = 29595445137792.

The previous prime is 109401857848873. The next prime is 109401857848879. The reversal of 109401857848878 is 878848758104901.

It is a super-2 number, since 2×109401857848878² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109401857848873) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38171325 + ... + 40937192.

It is an arithmetic number, because the mean of its divisors is an integer number (4115225106360).

Almost surely, 2^{109401857848878} is an apocalyptic number.

109401857848878 is an abundant number, since it is smaller than the sum of its proper divisors (153972548958162).

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

109401857848878 is a wasteful number, since it uses less digits than its factorization.

109401857848878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79110281.

The product of its (nonzero) digits is 1156055040, while the sum is 78.

The spelling of 109401857848878 in words is "one hundred nine trillion, four hundred one billion, eight hundred fifty-seven million, eight hundred forty-eight thousand, eight hundred seventy-eight".