20135783537 has 2 divisors, whose sum is σ = 20135783538. Its totient is φ = 20135783536.

The previous prime is 20135783519. The next prime is 20135783543. The reversal of 20135783537 is 73538753102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12036503521 + 8099280016 = 109711^2 + 89996^2 .

It is a cyclic number.

It is not a de Polignac number, because 20135783537 - 2⁸ = 20135783281 is a prime.

It is not a weakly prime, because it can be changed into another prime (20135783557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10067891768 + 10067891769.

It is an arithmetic number, because the mean of its divisors is an integer number (10067891769).

Almost surely, 2^20135783537 is an apocalyptic number.

It is an amenable number.

20135783537 is a deficient number, since it is larger than the sum of its proper divisors (1).

20135783537 is an equidigital number, since it uses as much as digits as its factorization.

20135783537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 529200, while the sum is 44.

The spelling of 20135783537 in words is "twenty billion, one hundred thirty-five million, seven hundred eighty-three thousand, five hundred thirty-seven".