7815501000361 has 2 divisors, whose sum is σ = 7815501000362. Its totient is φ = 7815501000360.

The previous prime is 7815501000319. The next prime is 7815501000389. The reversal of 7815501000361 is 1630001055187.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7738516948761 + 76984051600 = 2781819^2 + 277460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7815501000361 is a prime.

It is a super-2 number, since 2×7815501000361² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7815501000361.

It is not a weakly prime, because it can be changed into another prime (7815901000361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3907750500180 + 3907750500181.

It is an arithmetic number, because the mean of its divisors is an integer number (3907750500181).

Almost surely, 2^{7815501000361} is an apocalyptic number.

It is an amenable number.

7815501000361 is a deficient number, since it is larger than the sum of its proper divisors (1).

7815501000361 is an equidigital number, since it uses as much as digits as its factorization.

7815501000361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 37.

The spelling of 7815501000361 in words is "seven trillion, eight hundred fifteen billion, five hundred one million, three hundred sixty-one", and thus it is an aban number.