2145073444456 has 16 divisors (see below), whose sum is σ = 4026911639940. Its totient is φ = 1071230340480.

The previous prime is 2145073444427. The next prime is 2145073444499. The reversal of 2145073444456 is 6544443705412.

It can be written as a sum of positive squares in 2 ways, for example, as 2050240241956 + 94833202500 = 1431866^2 + 307950^2 .

It is a super-2 number, since 2×2145073444456² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163290741 + ... + 163303876.

Almost surely, 2^{2145073444456} is an apocalyptic number.

It is an amenable number.

2145073444456 is a deficient number, since it is larger than the sum of its proper divisors (1881838195484).

2145073444456 is a wasteful number, since it uses less digits than its factorization.

2145073444456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326595444 (or 326595440 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 49.

The spelling of 2145073444456 in words is "two trillion, one hundred forty-five billion, seventy-three million, four hundred forty-four thousand, four hundred fifty-six".