61335928981943 has 24 divisors (see below), whose sum is σ = 77127843502080. Its totient is φ = 47746001437200.

The previous prime is 61335928981913. The next prime is 61335928981961. The reversal of 61335928981943 is 34918982953316.

61335928981943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61335928981943 - 2¹² = 61335928977847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61335928981913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35697203 + ... + 37375956.

It is an arithmetic number, because the mean of its divisors is an integer number (3213660145920).

Almost surely, 2^{61335928981943} is an apocalyptic number.

61335928981943 is a deficient number, since it is larger than the sum of its proper divisors (15791914520137).

61335928981943 is a wasteful number, since it uses less digits than its factorization.

61335928981943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73074179 (or 73074168 counting only the distinct ones).

The product of its digits is 302330880, while the sum is 71.

The spelling of 61335928981943 in words is "sixty-one trillion, three hundred thirty-five billion, nine hundred twenty-eight million, nine hundred eighty-one thousand, nine hundred forty-three".