73661111011 has 8 divisors (see below), whose sum is σ = 73717426944. Its totient is φ = 73604822280.

The previous prime is 73661110979. The next prime is 73661111021. The reversal of 73661111011 is 11011116637.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73661111011 - 2⁵ = 73661110979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73661111021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10217170 + ... + 10224376.

It is an arithmetic number, because the mean of its divisors is an integer number (9214678368).

Almost surely, 2^73661111011 is an apocalyptic number.

73661111011 is a deficient number, since it is larger than the sum of its proper divisors (56315933).

73661111011 is a wasteful number, since it uses less digits than its factorization.

73661111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13601.

The product of its (nonzero) digits is 756, while the sum is 28.

Adding to 73661111011 its reverse (11011116637), we get a palindrome (84672227648).

The spelling of 73661111011 in words is "seventy-three billion, six hundred sixty-one million, one hundred eleven thousand, eleven".