4540215401987 has 2 divisors, whose sum is σ = 4540215401988. Its totient is φ = 4540215401986.

The previous prime is 4540215401977. The next prime is 4540215402001. The reversal of 4540215401987 is 7891045120454.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4540215401987 - 2⁴² = 142168890883 is a prime.

It is a super-2 number, since 2×4540215401987² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4540215401977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2270107700993 + 2270107700994.

It is an arithmetic number, because the mean of its divisors is an integer number (2270107700994).

Almost surely, 2^{4540215401987} is an apocalyptic number.

4540215401987 is a deficient number, since it is larger than the sum of its proper divisors (1).

4540215401987 is an equidigital number, since it uses as much as digits as its factorization.

4540215401987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1612800, while the sum is 50.

The spelling of 4540215401987 in words is "four trillion, five hundred forty billion, two hundred fifteen million, four hundred one thousand, nine hundred eighty-seven".