4540215401873 has 2 divisors, whose sum is σ = 4540215401874. Its totient is φ = 4540215401872.

The previous prime is 4540215401863. The next prime is 4540215401903. The reversal of 4540215401873 is 3781045120454.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4170384791104 + 369830610769 = 2042152^2 + 608137^2 .

It is a cyclic number.

It is not a de Polignac number, because 4540215401873 - 2⁴ = 4540215401857 is a prime.

It is a super-2 number, since 2×4540215401873² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4540215401803) 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 as a sum of consecutive naturals, namely, 2270107700936 + 2270107700937.

It is an arithmetic number, because the mean of its divisors is an integer number (2270107700937).

Almost surely, 2^{4540215401873} is an apocalyptic number.

It is an amenable number.

4540215401873 is a deficient number, since it is larger than the sum of its proper divisors (1).

4540215401873 is an equidigital number, since it uses as much as digits as its factorization.

4540215401873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 537600, while the sum is 44.

The spelling of 4540215401873 in words is "four trillion, five hundred forty billion, two hundred fifteen million, four hundred one thousand, eight hundred seventy-three".