73661392961 has 8 divisors (see below), whose sum is σ = 83502793920. Its totient is φ = 64416440592.

The previous prime is 73661392951. The next prime is 73661392963. The reversal of 73661392961 is 16929316637.

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 73661392961 - 2¹⁸ = 73661130817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73661392963) 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, 149111885 + ... + 149112378.

It is an arithmetic number, because the mean of its divisors is an integer number (10437849240).

Almost surely, 2^73661392961 is an apocalyptic number.

It is an amenable number.

73661392961 is a deficient number, since it is larger than the sum of its proper divisors (9841400959).

73661392961 is a wasteful number, since it uses less digits than its factorization.

73661392961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298224295.

The product of its digits is 2204496, while the sum is 53.

The spelling of 73661392961 in words is "seventy-three billion, six hundred sixty-one million, three hundred ninety-two thousand, nine hundred sixty-one".