20740583975 has 6 divisors (see below), whose sum is σ = 25718324160. Its totient is φ = 16592467160.

The previous prime is 20740583917. The next prime is 20740583993. The reversal of 20740583975 is 57938504702.

It is not a de Polignac number, because 20740583975 - 2¹² = 20740579879 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 414811655 + ... + 414811704.

It is an arithmetic number, because the mean of its divisors is an integer number (4286387360).

Almost surely, 2^20740583975 is an apocalyptic number.

20740583975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20740583975 is a deficient number, since it is larger than the sum of its proper divisors (4977740185).

20740583975 is an equidigital number, since it uses as much as digits as its factorization.

20740583975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829623369 (or 829623364 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 20740583975 in words is "twenty billion, seven hundred forty million, five hundred eighty-three thousand, nine hundred seventy-five".