61348197500 has 360 divisors, whose sum is σ = 155081295600. Its totient is φ = 21150720000.

The previous prime is 61348197497. The next prime is 61348197509. The reversal of 61348197500 is 579184316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61348197509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 562827446 + ... + 562827554.

Almost surely, 2^61348197500 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 61348197500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77540647800).

61348197500 is an abundant number, since it is smaller than the sum of its proper divisors (93733098100).

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

61348197500 is a wasteful number, since it uses less digits than its factorization.

61348197500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 61348197500 in words is "sixty-one billion, three hundred forty-eight million, one hundred ninety-seven thousand, five hundred".