315206900977 has 2 divisors, whose sum is σ = 315206900978. Its totient is φ = 315206900976.

The previous prime is 315206900959. The next prime is 315206901011. The reversal of 315206900977 is 779009602513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 281418579121 + 33788321856 = 530489^2 + 183816^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315206900977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 315206900977.

It is not a weakly prime, because it can be changed into another prime (315206970977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157603450488 + 157603450489.

It is an arithmetic number, because the mean of its divisors is an integer number (157603450489).

Almost surely, 2^315206900977 is an apocalyptic number.

It is an amenable number.

315206900977 is a deficient number, since it is larger than the sum of its proper divisors (1).

315206900977 is an equidigital number, since it uses as much as digits as its factorization.

315206900977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 714420, while the sum is 49.

The spelling of 315206900977 in words is "three hundred fifteen billion, two hundred six million, nine hundred thousand, nine hundred seventy-seven".