61255936611 has 20 divisors (see below), whose sum is σ = 91616263200. Its totient is φ = 40787985456.

The previous prime is 61255936591. The next prime is 61255936619. The reversal of 61255936611 is 11663955216.

61255936611 is a `hidden beast` number, since 6 + 1 + 2 + 559 + 36 + 61 + 1 = 666.

It is not a de Polignac number, because 61255936611 - 2²³ = 61247548003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61255936619) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 388971 + ... + 523268.

It is an arithmetic number, because the mean of its divisors is an integer number (4580813160).

Almost surely, 2^61255936611 is an apocalyptic number.

61255936611 is a deficient number, since it is larger than the sum of its proper divisors (30360326589).

61255936611 is an equidigital number, since it uses as much as digits as its factorization.

61255936611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913080 (or 913071 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The spelling of 61255936611 in words is "sixty-one billion, two hundred fifty-five million, nine hundred thirty-six thousand, six hundred eleven".