61132642775 has 6 divisors (see below), whose sum is σ = 75804477072. Its totient is φ = 48906114200.

The previous prime is 61132642751. The next prime is 61132642811. The reversal of 61132642775 is 57724623116.

It is a happy number.

It is not a de Polignac number, because 61132642775 - 2¹⁴ = 61132626391 is a prime.

It is a Duffinian number.

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, 1222652831 + ... + 1222652880.

It is an arithmetic number, because the mean of its divisors is an integer number (12634079512).

Almost surely, 2^61132642775 is an apocalyptic number.

61132642775 is a deficient number, since it is larger than the sum of its proper divisors (14671834297).

61132642775 is a wasteful number, since it uses less digits than its factorization.

61132642775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2445305721 (or 2445305716 counting only the distinct ones).

The product of its digits is 423360, while the sum is 44.

The spelling of 61132642775 in words is "sixty-one billion, one hundred thirty-two million, six hundred forty-two thousand, seven hundred seventy-five".