2073448455561 has 20 divisors (see below), whose sum is σ = 3539855565312. Its totient is φ = 1184827688568.

The previous prime is 2073448455523. The next prime is 2073448455563. The reversal of 2073448455561 is 1655548443702.

2073448455561 is a `hidden beast` number, since 2 + 0 + 7 + 3 + 4 + 4 + 84 + 5 + 556 + 1 = 666.

It is not a de Polignac number, because 2073448455561 - 2⁹ = 2073448455049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2073448455498 and 2073448455507.

It is not an unprimeable number, because it can be changed into a prime (2073448455563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1828437225 + ... + 1828438358.

Almost surely, 2^{2073448455561} is an apocalyptic number.

2073448455561 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2073448455561 is a deficient number, since it is larger than the sum of its proper divisors (1466407109751).

2073448455561 is an equidigital number, since it uses as much as digits as its factorization.

2073448455561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3656875602 (or 3656875593 counting only the distinct ones).

The product of its (nonzero) digits is 16128000, while the sum is 54.

The spelling of 2073448455561 in words is "two trillion, seventy-three billion, four hundred forty-eight million, four hundred fifty-five thousand, five hundred sixty-one".