61844587448 has 64 divisors (see below), whose sum is σ = 135834624000. Its totient is φ = 25850563200.

The previous prime is 61844587447. The next prime is 61844587459. The reversal of 61844587448 is 84478544816.

It is a happy number.

61844587448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61844587448² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61844587447) 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, 297353 + ... + 460551.

It is an arithmetic number, because the mean of its divisors is an integer number (2122416000).

Almost surely, 2^61844587448 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 61844587448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67917312000).

61844587448 is an abundant number, since it is smaller than the sum of its proper divisors (73990036552).

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

61844587448 is a wasteful number, since it uses less digits than its factorization.

61844587448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163380 (or 163376 counting only the distinct ones).

The product of its digits is 27525120, while the sum is 59.

The spelling of 61844587448 in words is "sixty-one billion, eight hundred forty-four million, five hundred eighty-seven thousand, four hundred forty-eight".