73578800738 has 4 divisors (see below), whose sum is σ = 110368201110. Its totient is φ = 36789400368.

The previous prime is 73578800653. The next prime is 73578800773. The reversal of 73578800738 is 83700887537.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 49010432689 + 24568368049 = 221383^2 + 156743^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18394700183 + ... + 18394700186.

Almost surely, 2^73578800738 is an apocalyptic number.

73578800738 is a deficient number, since it is larger than the sum of its proper divisors (36789400372).

73578800738 is a wasteful number, since it uses less digits than its factorization.

73578800738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36789400371.

The product of its (nonzero) digits is 7902720, while the sum is 56.

The spelling of 73578800738 in words is "seventy-three billion, five hundred seventy-eight million, eight hundred thousand, seven hundred thirty-eight".