73771062661 has 16 divisors (see below), whose sum is σ = 77768651520. Its totient is φ = 69839827200.

The previous prime is 73771062637. The next prime is 73771062667. The reversal of 73771062661 is 16626017737.

It is a cyclic number.

It is not a de Polignac number, because 73771062661 - 2²⁷ = 73636844933 is a prime.

It is a super-3 number, since 3×73771062661³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73771062667) 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, 11051821 + ... + 11058493.

It is an arithmetic number, because the mean of its divisors is an integer number (4860540720).

Almost surely, 2^73771062661 is an apocalyptic number.

It is an amenable number.

73771062661 is a deficient number, since it is larger than the sum of its proper divisors (3997588859).

73771062661 is a wasteful number, since it uses less digits than its factorization.

73771062661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11556.

The product of its (nonzero) digits is 444528, while the sum is 46.

The spelling of 73771062661 in words is "seventy-three billion, seven hundred seventy-one million, sixty-two thousand, six hundred sixty-one".