61188589011 has 32 divisors (see below), whose sum is σ = 90553881600. Its totient is φ = 36437813280.

The previous prime is 61188589009. The next prime is 61188589037. The reversal of 61188589011 is 11098588116.

It is a happy number.

It is not a de Polignac number, because 61188589011 - 2¹ = 61188589009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61188589001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4796880 + ... + 4809618.

It is an arithmetic number, because the mean of its divisors is an integer number (2829808800).

Almost surely, 2^61188589011 is an apocalyptic number.

61188589011 is a deficient number, since it is larger than the sum of its proper divisors (29365292589).

61188589011 is a wasteful number, since it uses less digits than its factorization.

61188589011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15279.

The product of its (nonzero) digits is 138240, while the sum is 48.

The spelling of 61188589011 in words is "sixty-one billion, one hundred eighty-eight million, five hundred eighty-nine thousand, eleven".