61605411132 has 24 divisors (see below), whose sum is σ = 144549014400. Its totient is φ = 20420414896.

The previous prime is 61605411113. The next prime is 61605411143. The reversal of 61605411132 is 23111450616.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 61605411132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14338032 + ... + 14342327.

It is an arithmetic number, because the mean of its divisors is an integer number (6022875600).

Almost surely, 2^61605411132 is an apocalyptic number.

It is an amenable number.

61605411132 is an abundant number, since it is smaller than the sum of its proper divisors (82943603268).

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

61605411132 is a wasteful number, since it uses less digits than its factorization.

61605411132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28680545 (or 28680543 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

Adding to 61605411132 its reverse (23111450616), we get a palindrome (84716861748).

The spelling of 61605411132 in words is "sixty-one billion, six hundred five million, four hundred eleven thousand, one hundred thirty-two".