61144546204 has 48 divisors (see below), whose sum is σ = 129746776320. Its totient is φ = 24613021440.

The previous prime is 61144546181. The next prime is 61144546207. The reversal of 61144546204 is 40264544116.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61144546207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102907 + ... + 364525.

It is an arithmetic number, because the mean of its divisors is an integer number (2703057840).

Almost surely, 2^61144546204 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 61144546204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64873388160).

61144546204 is an abundant number, since it is smaller than the sum of its proper divisors (68602230116).

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

61144546204 is a wasteful number, since it uses less digits than its factorization.

61144546204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262138 (or 262136 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 37.

The spelling of 61144546204 in words is "sixty-one billion, one hundred forty-four million, five hundred forty-six thousand, two hundred four".