61098986592 has 144 divisors (see below), whose sum is σ = 198718071552. Its totient is φ = 17443987200.

The previous prime is 61098986569. The next prime is 61098986593. The reversal of 61098986592 is 29568989016.

61098986592 is a `hidden beast` number, since 610 + 9 + 8 + 9 + 8 + 6 + 5 + 9 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61098986593) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2914773 + ... + 2935659.

It is an arithmetic number, because the mean of its divisors is an integer number (1379986608).

Almost surely, 2^61098986592 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 61098986592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99359035776).

61098986592 is an abundant number, since it is smaller than the sum of its proper divisors (137619084960).

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

61098986592 is a wasteful number, since it uses less digits than its factorization.

61098986592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22361 (or 22350 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 63.

The spelling of 61098986592 in words is "sixty-one billion, ninety-eight million, nine hundred eighty-six thousand, five hundred ninety-two".