20006762537 has 2 divisors, whose sum is σ = 20006762538. Its totient is φ = 20006762536.

The previous prime is 20006762533. The next prime is 20006762563. The reversal of 20006762537 is 73526760002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13609322281 + 6397440256 = 116659^2 + 79984^2 .

It is a cyclic number.

It is not a de Polignac number, because 20006762537 - 2² = 20006762533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20006762537.

It is not a weakly prime, because it can be changed into another prime (20006762533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10003381268 + 10003381269.

It is an arithmetic number, because the mean of its divisors is an integer number (10003381269).

Almost surely, 2^20006762537 is an apocalyptic number.

It is an amenable number.

20006762537 is a deficient number, since it is larger than the sum of its proper divisors (1).

20006762537 is an equidigital number, since it uses as much as digits as its factorization.

20006762537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 38.

The spelling of 20006762537 in words is "twenty billion, six million, seven hundred sixty-two thousand, five hundred thirty-seven".