61765117272 has 40 divisors (see below), whose sum is σ = 172999520100. Its totient is φ = 20588372208.

The previous prime is 61765117243. The next prime is 61765117277. The reversal of 61765117272 is 27271156716.

61765117272 is a `hidden beast` number, since 61 + 7 + 6 + 511 + 7 + 2 + 72 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61765117277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 47657622 + ... + 47658917.

Almost surely, 2^61765117272 is an apocalyptic number.

It is an amenable number.

61765117272 is an abundant number, since it is smaller than the sum of its proper divisors (111234402828).

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

61765117272 is a wasteful number, since it uses less digits than its factorization.

61765117272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95316557 (or 95316544 counting only the distinct ones).

The product of its digits is 246960, while the sum is 45.

The spelling of 61765117272 in words is "sixty-one billion, seven hundred sixty-five million, one hundred seventeen thousand, two hundred seventy-two".