20093909155 has 8 divisors (see below), whose sum is σ = 24452306784. Its totient is φ = 15848716800.

The previous prime is 20093909149. The next prime is 20093909177. The reversal of 20093909155 is 55190939002.

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

It is not a de Polignac number, because 20093909155 - 2⁵ = 20093909123 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 28300926 + ... + 28301635.

It is an arithmetic number, because the mean of its divisors is an integer number (3056538348).

Almost surely, 2^20093909155 is an apocalyptic number.

20093909155 is a deficient number, since it is larger than the sum of its proper divisors (4358397629).

20093909155 is an equidigital number, since it uses as much as digits as its factorization.

20093909155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56602637.

The product of its (nonzero) digits is 109350, while the sum is 43.

The spelling of 20093909155 in words is "twenty billion, ninety-three million, nine hundred nine thousand, one hundred fifty-five".