61656060011 has 32 divisors (see below), whose sum is σ = 78894345600. Its totient is φ = 47862202752.

The previous prime is 61656059999. The next prime is 61656060013. The reversal of 61656060011 is 11006065616.

It is not a de Polignac number, because 61656060011 - 2²⁶ = 61588951147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61656060011.

It is not an unprimeable number, because it can be changed into a prime (61656060013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105881 + ... + 366773.

It is an arithmetic number, because the mean of its divisors is an integer number (2465448300).

Almost surely, 2^61656060011 is an apocalyptic number.

61656060011 is a deficient number, since it is larger than the sum of its proper divisors (17238285589).

61656060011 is a wasteful number, since it uses less digits than its factorization.

61656060011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260980 (or 260966 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The spelling of 61656060011 in words is "sixty-one billion, six hundred fifty-six million, sixty thousand, eleven".