36355429681 has 2 divisors, whose sum is σ = 36355429682. Its totient is φ = 36355429680.

The previous prime is 36355429633. The next prime is 36355429723. The reversal of 36355429681 is 18692455363.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26606829456 + 9748600225 = 163116^2 + 98735^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36355429681 is a prime.

It is a super-2 number, since 2×36355429681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (36355427681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18177714840 + 18177714841.

It is an arithmetic number, because the mean of its divisors is an integer number (18177714841).

Almost surely, 2^36355429681 is an apocalyptic number.

It is an amenable number.

36355429681 is a deficient number, since it is larger than the sum of its proper divisors (1).

36355429681 is an equidigital number, since it uses as much as digits as its factorization.

36355429681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4665600, while the sum is 52.

The spelling of 36355429681 in words is "thirty-six billion, three hundred fifty-five million, four hundred twenty-nine thousand, six hundred eighty-one".