109620891955 has 8 divisors (see below), whose sum is σ = 135788459904. Its totient is φ = 84867787200.

The previous prime is 109620891949. The next prime is 109620891959. The reversal of 109620891955 is 559198026901.

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

It is not a de Polignac number, because 109620891955 - 2⁷ = 109620891827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109620891896 and 109620891905.

It is not an unprimeable number, because it can be changed into a prime (109620891959) 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 7 ways as a sum of consecutive naturals, for example, 353615626 + ... + 353615935.

It is an arithmetic number, because the mean of its divisors is an integer number (16973557488).

Almost surely, 2^109620891955 is an apocalyptic number.

109620891955 is a deficient number, since it is larger than the sum of its proper divisors (26167567949).

109620891955 is an equidigital number, since it uses as much as digits as its factorization.

109620891955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707231597.

The product of its (nonzero) digits is 1749600, while the sum is 55.

The spelling of 109620891955 in words is "one hundred nine billion, six hundred twenty million, eight hundred ninety-one thousand, nine hundred fifty-five".