109196984451 has 4 divisors (see below), whose sum is σ = 145595979272. Its totient is φ = 72797989632.

The previous prime is 109196984441. The next prime is 109196984581. The reversal of 109196984451 is 154489691901.

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

It is not a de Polignac number, because 109196984451 - 2¹¹ = 109196982403 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109196984391 and 109196984400.

It is not an unprimeable number, because it can be changed into a prime (109196984431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18199497406 + ... + 18199497411.

It is an arithmetic number, because the mean of its divisors is an integer number (36398994818).

Almost surely, 2^109196984451 is an apocalyptic number.

109196984451 is a deficient number, since it is larger than the sum of its proper divisors (36398994821).

109196984451 is an equidigital number, since it uses as much as digits as its factorization.

109196984451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36398994820.

The product of its (nonzero) digits is 2799360, while the sum is 57.

The spelling of 109196984451 in words is "one hundred nine billion, one hundred ninety-six million, nine hundred eighty-four thousand, four hundred fifty-one".