315445063440221 has 16 divisors (see below), whose sum is σ = 370593803827968. Its totient is φ = 264708428414400.

The previous prime is 315445063440211. The next prime is 315445063440257. The reversal of 315445063440221 is 122044360544513.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315445063440221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315445063440211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53866316 + ... + 59434586.

It is an arithmetic number, because the mean of its divisors is an integer number (23162112739248).

Almost surely, 2^{315445063440221} is an apocalyptic number.

It is an amenable number.

315445063440221 is a deficient number, since it is larger than the sum of its proper divisors (55148740387747).

315445063440221 is a wasteful number, since it uses less digits than its factorization.

315445063440221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5964452.

The product of its (nonzero) digits is 1382400, while the sum is 44.

The spelling of 315445063440221 in words is "three hundred fifteen trillion, four hundred forty-five billion, sixty-three million, four hundred forty thousand, two hundred twenty-one".