315245545547 has 2 divisors, whose sum is σ = 315245545548. Its totient is φ = 315245545546.

The previous prime is 315245545507. The next prime is 315245545553. The reversal of 315245545547 is 745545542513.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (745545542513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315245545547 - 2¹⁸ = 315245283403 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 315245545495 and 315245545504.

It is not a weakly prime, because it can be changed into another prime (315245545507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157622772773 + 157622772774.

It is an arithmetic number, because the mean of its divisors is an integer number (157622772774).

Almost surely, 2^315245545547 is an apocalyptic number.

315245545547 is a deficient number, since it is larger than the sum of its proper divisors (1).

315245545547 is an equidigital number, since it uses as much as digits as its factorization.

315245545547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8400000, while the sum is 50.

The spelling of 315245545547 in words is "three hundred fifteen billion, two hundred forty-five million, five hundred forty-five thousand, five hundred forty-seven".