20032009957 has 2 divisors, whose sum is σ = 20032009958. Its totient is φ = 20032009956.

The previous prime is 20032009889. The next prime is 20032009961. The reversal of 20032009957 is 75990023002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11464841476 + 8567168481 = 107074^2 + 92559^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20032009957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20032009997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10016004978 + 10016004979.

It is an arithmetic number, because the mean of its divisors is an integer number (10016004979).

Almost surely, 2^20032009957 is an apocalyptic number.

It is an amenable number.

20032009957 is a deficient number, since it is larger than the sum of its proper divisors (1).

20032009957 is an equidigital number, since it uses as much as digits as its factorization.

20032009957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 37.

The spelling of 20032009957 in words is "twenty billion, thirty-two million, nine thousand, nine hundred fifty-seven".