61727992215488 has 224 divisors, whose sum is σ = 130705919984640. Its totient is φ = 28841290997760.

The previous prime is 61727992215481. The next prime is 61727992215497. The reversal of 61727992215488 is 88451229972716.

It is a super-3 number, since 3×61727992215488³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61727992215481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58069606445 + ... + 58069607507.

It is an arithmetic number, because the mean of its divisors is an integer number (583508571360).

Almost surely, 2^{61727992215488} 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 61727992215488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65352959992320).

61727992215488 is an abundant number, since it is smaller than the sum of its proper divisors (68977927769152).

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

61727992215488 is a wasteful number, since it uses less digits than its factorization.

61727992215488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2595 (or 2585 counting only the distinct ones).

The product of its digits is 243855360, while the sum is 71.

The spelling of 61727992215488 in words is "sixty-one trillion, seven hundred twenty-seven billion, nine hundred ninety-two million, two hundred fifteen thousand, four hundred eighty-eight".