541981873457 has 2 divisors, whose sum is σ = 541981873458. Its totient is φ = 541981873456.

The previous prime is 541981873369. The next prime is 541981873469. The reversal of 541981873457 is 754378189145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 435182979856 + 106798893601 = 659684^2 + 326801^2 .

It is a cyclic number.

It is not a de Polignac number, because 541981873457 - 2¹⁸ = 541981611313 is a prime.

It is a super-2 number, since 2×541981873457² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 541981873457.

It is not a weakly prime, because it can be changed into another prime (541981873957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270990936728 + 270990936729.

It is an arithmetic number, because the mean of its divisors is an integer number (270990936729).

Almost surely, 2^541981873457 is an apocalyptic number.

It is an amenable number.

541981873457 is a deficient number, since it is larger than the sum of its proper divisors (1).

541981873457 is an equidigital number, since it uses as much as digits as its factorization.

541981873457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33868800, while the sum is 62.

The spelling of 541981873457 in words is "five hundred forty-one billion, nine hundred eighty-one million, eight hundred seventy-three thousand, four hundred fifty-seven".