61044278152 has 64 divisors (see below), whose sum is σ = 134702668800. Its totient is φ = 25568317440.

The previous prime is 61044278137. The next prime is 61044278159. The reversal of 61044278152 is 25187244016.

It is not an unprimeable number, because it can be changed into a prime (61044278159) 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, 613849 + ... + 706327.

It is an arithmetic number, because the mean of its divisors is an integer number (2104729200).

Almost surely, 2^61044278152 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 61044278152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67351334400).

61044278152 is an abundant number, since it is smaller than the sum of its proper divisors (73658390648).

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

61044278152 is a wasteful number, since it uses less digits than its factorization.

61044278152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93086 (or 93082 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The spelling of 61044278152 in words is "sixty-one billion, forty-four million, two hundred seventy-eight thousand, one hundred fifty-two".