73400066738 has 16 divisors (see below), whose sum is σ = 110203715160. Its totient is φ = 36665515776.

The previous prime is 73400066737. The next prime is 73400066767. The reversal of 73400066738 is 83766000437.

It can be written as a sum of positive squares in 4 ways, for example, as 71702379529 + 1697687209 = 267773^2 + 41203^2 .

It is not an unprimeable number, because it can be changed into a prime (73400066737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15758906 + ... + 15763562.

Almost surely, 2^73400066738 is an apocalyptic number.

73400066738 is a deficient number, since it is larger than the sum of its proper divisors (36803648422).

73400066738 is a wasteful number, since it uses less digits than its factorization.

73400066738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10381.

The product of its (nonzero) digits is 508032, while the sum is 44.

The spelling of 73400066738 in words is "seventy-three billion, four hundred million, sixty-six thousand, seven hundred thirty-eight".