2281921578545 has 8 divisors (see below), whose sum is σ = 3129492450624. Its totient is φ = 1564746225264.

The previous prime is 2281921578539. The next prime is 2281921578583. The reversal of 2281921578545 is 5458751291822.

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 2281921578545 - 2³⁴ = 2264741709361 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32598879659 + ... + 32598879728.

It is an arithmetic number, because the mean of its divisors is an integer number (391186556328).

Almost surely, 2^{2281921578545} is an apocalyptic number.

It is an amenable number.

2281921578545 is a deficient number, since it is larger than the sum of its proper divisors (847570872079).

2281921578545 is an equidigital number, since it uses as much as digits as its factorization.

2281921578545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65197759399.

The product of its digits is 16128000, while the sum is 59.

The spelling of 2281921578545 in words is "two trillion, two hundred eighty-one billion, nine hundred twenty-one million, five hundred seventy-eight thousand, five hundred forty-five".