61151103200 has 144 divisors (see below), whose sum is σ = 165930536016. Its totient is φ = 21817036800.

The previous prime is 61151103151. The next prime is 61151103227. The reversal of 61151103200 is 230115116.

61151103200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 400844 + ... + 531956.

It is an arithmetic number, because the mean of its divisors is an integer number (1152295389).

Almost surely, 2^61151103200 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 61151103200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82965268008).

61151103200 is an abundant number, since it is smaller than the sum of its proper divisors (104779432816).

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

61151103200 is a wasteful number, since it uses less digits than its factorization.

61151103200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131197 (or 131184 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 61151103200 its reverse (230115116), we get a palindrome (61381218316).

The spelling of 61151103200 in words is "sixty-one billion, one hundred fifty-one million, one hundred three thousand, two hundred".