73481016681 has 24 divisors (see below), whose sum is σ = 108164741256. Its totient is φ = 48052892160.

The previous prime is 73481016677. The next prime is 73481016703. The reversal of 73481016681 is 18661018437.

73481016681 is a `hidden beast` number, since 7 + 3 + 481 + 0 + 166 + 8 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5077845081 + 68403171600 = 71259^2 + 261540^2 .

It is not a de Polignac number, because 73481016681 - 2² = 73481016677 is a prime.

It is a super-2 number, since 2×73481016681² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (73481016641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2725041 + ... + 2751873.

It is an arithmetic number, because the mean of its divisors is an integer number (4506864219).

Almost surely, 2^73481016681 is an apocalyptic number.

It is an amenable number.

73481016681 is a deficient number, since it is larger than the sum of its proper divisors (34683724575).

73481016681 is a wasteful number, since it uses less digits than its factorization.

73481016681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32633 (or 32630 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 73481016681 in words is "seventy-three billion, four hundred eighty-one million, sixteen thousand, six hundred eighty-one".