35516420521 has 2 divisors, whose sum is σ = 35516420522. Its totient is φ = 35516420520.

The previous prime is 35516420479. The next prime is 35516420561. The reversal of 35516420521 is 12502461553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21701709225 + 13814711296 = 147315^2 + 117536^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-35516420521 is a prime.

It is a super-2 number, since 2×35516420521² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (35516420561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17758210260 + 17758210261.

It is an arithmetic number, because the mean of its divisors is an integer number (17758210261).

Almost surely, 2^35516420521 is an apocalyptic number.

It is an amenable number.

35516420521 is a deficient number, since it is larger than the sum of its proper divisors (1).

35516420521 is an equidigital number, since it uses as much as digits as its factorization.

35516420521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 35516420521 in words is "thirty-five billion, five hundred sixteen million, four hundred twenty thousand, five hundred twenty-one".