36481881577 has 2 divisors, whose sum is σ = 36481881578. Its totient is φ = 36481881576.

The previous prime is 36481881571. The next prime is 36481881671. The reversal of 36481881577 is 77518818463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22317073321 + 14164808256 = 149389^2 + 119016^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36481881577 is a prime.

It is not a weakly prime, because it can be changed into another prime (36481881571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18240940788 + 18240940789.

It is an arithmetic number, because the mean of its divisors is an integer number (18240940789).

Almost surely, 2^36481881577 is an apocalyptic number.

It is an amenable number.

36481881577 is a deficient number, since it is larger than the sum of its proper divisors (1).

36481881577 is an equidigital number, since it uses as much as digits as its factorization.

36481881577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9031680, while the sum is 58.

The spelling of 36481881577 in words is "thirty-six billion, four hundred eighty-one million, eight hundred eighty-one thousand, five hundred seventy-seven".