361651101649 has 2 divisors, whose sum is σ = 361651101650. Its totient is φ = 361651101648.

The previous prime is 361651101619. The next prime is 361651101667. The reversal of 361651101649 is 946101156163.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 250432186624 + 111218915025 = 500432^2 + 333495^2 .

It is an emirp because it is prime and its reverse (946101156163) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 361651101649 - 2²³ = 361642713041 is a prime.

It is not a weakly prime, because it can be changed into another prime (361651101619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180825550824 + 180825550825.

It is an arithmetic number, because the mean of its divisors is an integer number (180825550825).

Almost surely, 2^361651101649 is an apocalyptic number.

It is an amenable number.

361651101649 is a deficient number, since it is larger than the sum of its proper divisors (1).

361651101649 is an equidigital number, since it uses as much as digits as its factorization.

361651101649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 361651101649 in words is "three hundred sixty-one billion, six hundred fifty-one million, one hundred one thousand, six hundred forty-nine".