61218541134 has 24 divisors (see below), whose sum is σ = 132646662720. Its totient is φ = 20405181888.

The previous prime is 61218541093. The next prime is 61218541141. The reversal of 61218541134 is 43114581216.

61218541134 is a `hidden beast` number, since 61 + 2 + 185 + 411 + 3 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 358147 + ... + 500705.

It is an arithmetic number, because the mean of its divisors is an integer number (5526944280).

Almost surely, 2^61218541134 is an apocalyptic number.

61218541134 is an abundant number, since it is smaller than the sum of its proper divisors (71428121586).

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

61218541134 is a wasteful number, since it uses less digits than its factorization.

61218541134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166424 (or 166421 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The spelling of 61218541134 in words is "sixty-one billion, two hundred eighteen million, five hundred forty-one thousand, one hundred thirty-four".