73400682154 has 4 divisors (see below), whose sum is σ = 110101023234. Its totient is φ = 36700341076.

The previous prime is 73400682149. The next prime is 73400682163. The reversal of 73400682154 is 45128600437.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45128600437 = 149 ⋅302876513.

It can be written as a sum of positive squares in only one way, i.e., 63284949225 + 10115732929 = 251565^2 + 100577^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18350170537 + ... + 18350170540.

Almost surely, 2^73400682154 is an apocalyptic number.

73400682154 is a deficient number, since it is larger than the sum of its proper divisors (36700341080).

73400682154 is a wasteful number, since it uses less digits than its factorization.

73400682154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36700341079.

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 73400682154 in words is "seventy-three billion, four hundred million, six hundred eighty-two thousand, one hundred fifty-four".