35540651521 has 2 divisors, whose sum is σ = 35540651522. Its totient is φ = 35540651520.

The previous prime is 35540651467. The next prime is 35540651563. The reversal of 35540651521 is 12515604553.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34556951025 + 983700496 = 185895^2 + 31364^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-35540651521 is a prime.

It is a super-2 number, since 2×35540651521² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (35540621521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17770325760 + 17770325761.

It is an arithmetic number, because the mean of its divisors is an integer number (17770325761).

Almost surely, 2^35540651521 is an apocalyptic number.

It is an amenable number.

35540651521 is a deficient number, since it is larger than the sum of its proper divisors (1).

35540651521 is an equidigital number, since it uses as much as digits as its factorization.

35540651521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 35540651521 in words is "thirty-five billion, five hundred forty million, six hundred fifty-one thousand, five hundred twenty-one".