615448030997 has 2 divisors, whose sum is σ = 615448030998. Its totient is φ = 615448030996.

The previous prime is 615448030993. The next prime is 615448031039. The reversal of 615448030997 is 799030844516.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 549931997476 + 65516033521 = 741574^2 + 255961^2 .

It is a cyclic number.

It is not a de Polignac number, because 615448030997 - 2² = 615448030993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (615448030993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307724015498 + 307724015499.

It is an arithmetic number, because the mean of its divisors is an integer number (307724015499).

Almost surely, 2^615448030997 is an apocalyptic number.

It is an amenable number.

615448030997 is a deficient number, since it is larger than the sum of its proper divisors (1).

615448030997 is an equidigital number, since it uses as much as digits as its factorization.

615448030997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 615448030997 in words is "six hundred fifteen billion, four hundred forty-eight million, thirty thousand, nine hundred ninety-seven".