73405037663 has 8 divisors (see below), whose sum is σ = 73638979200. Its totient is φ = 73171260568.

The previous prime is 73405037549. The next prime is 73405037677. The reversal of 73405037663 is 36673050437.

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 73405037663 - 2¹⁶ = 73404972127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73405037263) 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, 886220 + ... + 965502.

It is an arithmetic number, because the mean of its divisors is an integer number (9204872400).

Almost surely, 2^73405037663 is an apocalyptic number.

73405037663 is a deficient number, since it is larger than the sum of its proper divisors (233941537).

73405037663 is a wasteful number, since it uses less digits than its factorization.

73405037663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82221.

The product of its (nonzero) digits is 952560, while the sum is 44.

The spelling of 73405037663 in words is "seventy-three billion, four hundred five million, thirty-seven thousand, six hundred sixty-three".