540302561266 has 16 divisors (see below), whose sum is σ = 872869103064. Its totient is φ = 249349653504.

The previous prime is 540302561263. The next prime is 540302561269. The reversal of 540302561266 is 662165203045.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (540302561263) and next prime (540302561269).

It can be written as a sum of positive squares in 4 ways, for example, as 378445202041 + 161857359225 = 615179^2 + 402315^2 .

It is not an unprimeable number, because it can be changed into a prime (540302561263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544405 + ... + 1173448.

Almost surely, 2^540302561266 is an apocalyptic number.

540302561266 is a deficient number, since it is larger than the sum of its proper divisors (332566541798).

540302561266 is a wasteful number, since it uses less digits than its factorization.

540302561266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729965.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 540302561266 in words is "five hundred forty billion, three hundred two million, five hundred sixty-one thousand, two hundred sixty-six".