315612517310542 has 4 divisors (see below), whose sum is σ = 473418775965816. Its totient is φ = 157806258655270.

The previous prime is 315612517310507. The next prime is 315612517310543. The reversal of 315612517310542 is 245013715216513.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×315612517310542² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 315612517310492 and 315612517310501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315612517310543) 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, 78903129327634 + ... + 78903129327637.

It is an arithmetic number, because the mean of its divisors is an integer number (118354693991454).

Almost surely, 2^{315612517310542} is an apocalyptic number.

315612517310542 is a deficient number, since it is larger than the sum of its proper divisors (157806258655274).

315612517310542 is a wasteful number, since it uses less digits than its factorization.

315612517310542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157806258655273.

The product of its (nonzero) digits is 756000, while the sum is 46.

The spelling of 315612517310542 in words is "three hundred fifteen trillion, six hundred twelve billion, five hundred seventeen million, three hundred ten thousand, five hundred forty-two".