20017373775 has 48 divisors (see below), whose sum is σ = 40048222464. Its totient is φ = 8612513280.

The previous prime is 20017373771. The next prime is 20017373797. The reversal of 20017373775 is 57737371002.

It is not a de Polignac number, because 20017373775 - 2² = 20017373771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20017373771) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1112497 + ... + 1130346.

It is an arithmetic number, because the mean of its divisors is an integer number (834337968).

Almost surely, 2^20017373775 is an apocalyptic number.

20017373775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20017373775 is an abundant number, since it is smaller than the sum of its proper divisors (20030848689).

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

20017373775 is a wasteful number, since it uses less digits than its factorization.

20017373775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2242880 (or 2242875 counting only the distinct ones).

The product of its (nonzero) digits is 216090, while the sum is 42.

The spelling of 20017373775 in words is "twenty billion, seventeen million, three hundred seventy-three thousand, seven hundred seventy-five".