73556043743 has 16 divisors (see below), whose sum is σ = 90586821696. Its totient is φ = 58161991680.

The previous prime is 73556043721. The next prime is 73556043749. The reversal of 73556043743 is 34734065537.

It is not a de Polignac number, because 73556043743 - 2²⁰ = 73554995167 is a prime.

It is a super-2 number, since 2×73556043743² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73556043749) 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, 103778 + ... + 397343.

It is an arithmetic number, because the mean of its divisors is an integer number (5661676356).

Almost surely, 2^73556043743 is an apocalyptic number.

73556043743 is a deficient number, since it is larger than the sum of its proper divisors (17030777953).

73556043743 is a wasteful number, since it uses less digits than its factorization.

73556043743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502754.

The product of its (nonzero) digits is 3175200, while the sum is 47.

The spelling of 73556043743 in words is "seventy-three billion, five hundred fifty-six million, forty-three thousand, seven hundred forty-three".