61089799752 has 128 divisors (see below), whose sum is σ = 172703625600. Its totient is φ = 20003791104.

The previous prime is 61089799733. The next prime is 61089799783. The reversal of 61089799752 is 25799798016.

61089799752 is a `hidden beast` number, since 610 + 8 + 9 + 7 + 9 + 9 + 7 + 5 + 2 = 666.

61089799752 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 61089799752.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5392398 + ... + 5403714.

It is an arithmetic number, because the mean of its divisors is an integer number (1349247075).

Almost surely, 2^61089799752 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61089799752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86351812800).

61089799752 is an abundant number, since it is smaller than the sum of its proper divisors (111613825848).

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

61089799752 is a wasteful number, since it uses less digits than its factorization.

61089799752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11772 (or 11762 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 63.

It can be divided in two parts, 610897 and 99752, that added together give a square (710649 = 843²).

The spelling of 61089799752 in words is "sixty-one billion, eighty-nine million, seven hundred ninety-nine thousand, seven hundred fifty-two".