73806563973 has 16 divisors (see below), whose sum is σ = 98957073600. Its totient is φ = 48930462336.

The previous prime is 73806563947. The next prime is 73806564001. The reversal of 73806563973 is 37936560837.

It is a happy number.

It is not a de Polignac number, because 73806563973 - 2¹⁴ = 73806547589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73806563903) 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, 1210761 + ... + 1270257.

It is an arithmetic number, because the mean of its divisors is an integer number (6184817100).

Almost surely, 2^73806563973 is an apocalyptic number.

It is an amenable number.

73806563973 is a deficient number, since it is larger than the sum of its proper divisors (25150509627).

73806563973 is a wasteful number, since it uses less digits than its factorization.

73806563973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61796.

The product of its (nonzero) digits is 17146080, while the sum is 57.

The spelling of 73806563973 in words is "seventy-three billion, eight hundred six million, five hundred sixty-three thousand, nine hundred seventy-three".