315512640440545 has 8 divisors (see below), whose sum is σ = 379046884803624. Its totient is φ = 252122301502464.

The previous prime is 315512640440539. The next prime is 315512640440551. The reversal of 315512640440545 is 545044046215513.

It is an interprime number because it is at equal distance from previous prime (315512640440539) and next prime (315512640440551).

It can be written as a sum of positive squares in 4 ways, for example, as 6695844542689 + 308816795897856 = 2587633^2 + 17573184^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 315512640440545 - 2⁵ = 315512640440513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 35976351424 + ... + 35976360193.

It is an arithmetic number, because the mean of its divisors is an integer number (47380860600453).

Almost surely, 2^{315512640440545} is an apocalyptic number.

It is an amenable number.

315512640440545 is a deficient number, since it is larger than the sum of its proper divisors (63534244363079).

315512640440545 is an equidigital number, since it uses as much as digits as its factorization.

315512640440545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71952712499.

The product of its (nonzero) digits is 5760000, while the sum is 49.

The spelling of 315512640440545 in words is "three hundred fifteen trillion, five hundred twelve billion, six hundred forty million, four hundred forty thousand, five hundred forty-five".