3657452386961 has 2 divisors, whose sum is σ = 3657452386962. Its totient is φ = 3657452386960.

The previous prime is 3657452386949. The next prime is 3657452387027. The reversal of 3657452386961 is 1696832547563.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1911140353600 + 1746312033361 = 1382440^2 + 1321481^2 .

It is an emirp because it is prime and its reverse (1696832547563) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3657452386961 is a prime.

It is not a weakly prime, because it can be changed into another prime (3657452086961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1828726193480 + 1828726193481.

It is an arithmetic number, because the mean of its divisors is an integer number (1828726193481).

Almost surely, 2^{3657452386961} is an apocalyptic number.

It is an amenable number.

3657452386961 is a deficient number, since it is larger than the sum of its proper divisors (1).

3657452386961 is an equidigital number, since it uses as much as digits as its factorization.

3657452386961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 195955200, while the sum is 65.

The spelling of 3657452386961 in words is "three trillion, six hundred fifty-seven billion, four hundred fifty-two million, three hundred eighty-six thousand, nine hundred sixty-one".