61709448192 has 176 divisors, whose sum is σ = 188777287680. Its totient is φ = 17556037632.

The previous prime is 61709448181. The next prime is 61709448223. The reversal of 61709448192 is 29184490716.

It is a super-2 number, since 2×61709448192² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5133453 + ... + 5145459.

Almost surely, 2^61709448192 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 61709448192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94388643840).

61709448192 is an abundant number, since it is smaller than the sum of its proper divisors (127067839488).

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

61709448192 is a wasteful number, since it uses less digits than its factorization.

61709448192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12276 (or 12258 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 61709448192 in words is "sixty-one billion, seven hundred nine million, four hundred forty-eight thousand, one hundred ninety-two".