20309753075 has 12 divisors (see below), whose sum is σ = 25996484928. Its totient is φ = 15723679200.

The previous prime is 20309753063. The next prime is 20309753099. The reversal of 20309753075 is 57035790302.

It is not a de Polignac number, because 20309753075 - 2⁴ = 20309753059 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13102292 + ... + 13103841.

It is an arithmetic number, because the mean of its divisors is an integer number (2166373744).

Almost surely, 2^20309753075 is an apocalyptic number.

20309753075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20309753075 is a deficient number, since it is larger than the sum of its proper divisors (5686731853).

20309753075 is a wasteful number, since it uses less digits than its factorization.

20309753075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26206174 (or 26206169 counting only the distinct ones).

The product of its (nonzero) digits is 198450, while the sum is 41.

The spelling of 20309753075 in words is "twenty billion, three hundred nine million, seven hundred fifty-three thousand, seventy-five".