20172268691038 has 8 divisors (see below), whose sum is σ = 30258693812088. Its totient is φ = 10086037420344.

The previous prime is 20172268691011. The next prime is 20172268691129. The reversal of 20172268691038 is 83019686227102.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20172268691038.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48202156 + ... + 48618847.

It is an arithmetic number, because the mean of its divisors is an integer number (3782336726511).

Almost surely, 2^{20172268691038} is an apocalyptic number.

20172268691038 is a deficient number, since it is larger than the sum of its proper divisors (10086425121050).

20172268691038 is a wasteful number, since it uses less digits than its factorization.

20172268691038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96925178.

The product of its (nonzero) digits is 3483648, while the sum is 55.

The spelling of 20172268691038 in words is "twenty trillion, one hundred seventy-two billion, two hundred sixty-eight million, six hundred ninety-one thousand, thirty-eight".