61013451124272 has 160 divisors (see below), whose sum is σ = 162872784046080. Its totient is φ = 19670756152320.

The previous prime is 61013451124267. The next prime is 61013451124459. The reversal of 61013451124272 is 27242115431016.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 61013451124272.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2304207129 + ... + 2304233607.

It is an arithmetic number, because the mean of its divisors is an integer number (1017954900288).

Almost surely, 2^{61013451124272} 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 61013451124272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81436392023040).

61013451124272 is an abundant number, since it is smaller than the sum of its proper divisors (101859332921808).

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

61013451124272 is a wasteful number, since it uses less digits than its factorization.

61013451124272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39371 (or 39365 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

Adding to 61013451124272 its reverse (27242115431016), we get a palindrome (88255566555288).

The spelling of 61013451124272 in words is "sixty-one trillion, thirteen billion, four hundred fifty-one million, one hundred twenty-four thousand, two hundred seventy-two".