61704136547200 has 288 divisors, whose sum is σ = 177676137095400. Its totient is φ = 21112590643200.

The previous prime is 61704136547191. The next prime is 61704136547203. The reversal of 61704136547200 is 274563140716.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61704136547203) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 76588066 + ... + 77389534.

Almost surely, 2^{61704136547200} 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 61704136547200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88838068547700).

61704136547200 is an abundant number, since it is smaller than the sum of its proper divisors (115972000548200).

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

61704136547200 is a wasteful number, since it uses less digits than its factorization.

61704136547200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801998 (or 801974 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 46.

Adding to 61704136547200 its reverse (274563140716), we get a palindrome (61978699687916).

The spelling of 61704136547200 in words is "sixty-one trillion, seven hundred four billion, one hundred thirty-six million, five hundred forty-seven thousand, two hundred".