61562255166 has 12 divisors (see below), whose sum is σ = 133384886232. Its totient is φ = 20520751716.

The previous prime is 61562255137. The next prime is 61562255171. The reversal of 61562255166 is 66155226516.

61562255166 is a `hidden beast` number, since 6 + 1 + 5 + 622 + 5 + 5 + 16 + 6 = 666.

It is a super-2 number, since 2×61562255166² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 1710062626 + ... + 1710062661.

It is an arithmetic number, because the mean of its divisors is an integer number (11115407186).

Almost surely, 2^61562255166 is an apocalyptic number.

61562255166 is an abundant number, since it is smaller than the sum of its proper divisors (71822631066).

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

61562255166 is a wasteful number, since it uses less digits than its factorization.

61562255166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3420125295 (or 3420125292 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The spelling of 61562255166 in words is "sixty-one billion, five hundred sixty-two million, two hundred fifty-five thousand, one hundred sixty-six".