73440669550 has 24 divisors (see below), whose sum is σ = 137504292912. Its totient is φ = 29181720000.

The previous prime is 73440669529. The next prime is 73440669587. The reversal of 73440669550 is 5596604437.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 73440669494 and 73440669503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4856071 + ... + 4871170.

It is an arithmetic number, because the mean of its divisors is an integer number (5729345538).

Almost surely, 2^73440669550 is an apocalyptic number.

73440669550 is a deficient number, since it is larger than the sum of its proper divisors (64063623362).

73440669550 is a wasteful number, since it uses less digits than its factorization.

73440669550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9727404 (or 9727399 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 49.

The spelling of 73440669550 in words is "seventy-three billion, four hundred forty million, six hundred sixty-nine thousand, five hundred fifty".