20007575197 has 2 divisors, whose sum is σ = 20007575198. Its totient is φ = 20007575196.

The previous prime is 20007575171. The next prime is 20007575201. The reversal of 20007575197 is 79157570002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17366231961 + 2641343236 = 131781^2 + 51394^2 .

It is a cyclic number.

It is not a de Polignac number, because 20007575197 - 2⁷ = 20007575069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20007575167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10003787598 + 10003787599.

It is an arithmetic number, because the mean of its divisors is an integer number (10003787599).

Almost surely, 2^20007575197 is an apocalyptic number.

It is an amenable number.

20007575197 is a deficient number, since it is larger than the sum of its proper divisors (1).

20007575197 is an equidigital number, since it uses as much as digits as its factorization.

20007575197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 154350, while the sum is 43.

The spelling of 20007575197 in words is "twenty billion, seven million, five hundred seventy-five thousand, one hundred ninety-seven".