542601045509 has 2 divisors, whose sum is σ = 542601045510. Its totient is φ = 542601045508.

The previous prime is 542601045499. The next prime is 542601045517. The reversal of 542601045509 is 905540106245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 305563517284 + 237037528225 = 552778^2 + 486865^2 .

It is a cyclic number.

It is not a de Polignac number, because 542601045509 - 2²⁰ = 542599996933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542601245509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271300522754 + 271300522755.

It is an arithmetic number, because the mean of its divisors is an integer number (271300522755).

Almost surely, 2^542601045509 is an apocalyptic number.

It is an amenable number.

542601045509 is a deficient number, since it is larger than the sum of its proper divisors (1).

542601045509 is an equidigital number, since it uses as much as digits as its factorization.

542601045509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 542601045509 in words is "five hundred forty-two billion, six hundred one million, forty-five thousand, five hundred nine".