61204144134 has 64 divisors (see below), whose sum is σ = 142911936000. Its totient is φ = 17467085664.

The previous prime is 61204144103. The next prime is 61204144139. The reversal of 61204144134 is 43144140216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61204144139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1850212 + ... + 1883000.

It is an arithmetic number, because the mean of its divisors is an integer number (2232999000).

Almost surely, 2^61204144134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61204144134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71455968000).

61204144134 is an abundant number, since it is smaller than the sum of its proper divisors (81707791866).

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

61204144134 is a wasteful number, since it uses less digits than its factorization.

61204144134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33722 (or 33708 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The spelling of 61204144134 in words is "sixty-one billion, two hundred four million, one hundred forty-four thousand, one hundred thirty-four".