540985893138 has 12 divisors (see below), whose sum is σ = 1172136101838. Its totient is φ = 180328631040.

The previous prime is 540985893127. The next prime is 540985893157. The reversal of 540985893138 is 831398589045.

540985893138 is a `hidden beast` number, since 5 + 40 + 9 + 8 + 589 + 3 + 1 + 3 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 287335665369 + 253650227769 = 536037^2 + 503637^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15027385903 + ... + 15027385938.

Almost surely, 2^540985893138 is an apocalyptic number.

540985893138 is an abundant number, since it is smaller than the sum of its proper divisors (631150208700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

540985893138 is a wasteful number, since it uses less digits than its factorization.

540985893138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30054771849 (or 30054771846 counting only the distinct ones).

The product of its (nonzero) digits is 37324800, while the sum is 63.

The spelling of 540985893138 in words is "five hundred forty billion, nine hundred eighty-five million, eight hundred ninety-three thousand, one hundred thirty-eight".