61101888804 has 36 divisors (see below), whose sum is σ = 168493088400. Its totient is φ = 18515723760.

The previous prime is 61101888781. The next prime is 61101888847. The reversal of 61101888804 is 40888810116.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 61101888804.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77148454 + ... + 77149245.

Almost surely, 2^61101888804 is an apocalyptic number.

It is an amenable number.

61101888804 is an abundant number, since it is smaller than the sum of its proper divisors (107391199596).

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

61101888804 is a wasteful number, since it uses less digits than its factorization.

61101888804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154297720 (or 154297715 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 45.

The spelling of 61101888804 in words is "sixty-one billion, one hundred one million, eight hundred eighty-eight thousand, eight hundred four".