73561752347 has 4 divisors (see below), whose sum is σ = 73563119016. Its totient is φ = 73560385680.

The previous prime is 73561752337. The next prime is 73561752389. The reversal of 73561752347 is 74325716537.

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

It is a cyclic number.

It is not a de Polignac number, because 73561752347 - 2¹⁶ = 73561686811 is a prime.

It is a super-4 number, since 4×73561752347⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73561752295 and 73561752304.

It is not an unprimeable number, because it can be changed into a prime (73561752307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 599138 + ... + 711399.

It is an arithmetic number, because the mean of its divisors is an integer number (18390779754).

Almost surely, 2^73561752347 is an apocalyptic number.

73561752347 is a deficient number, since it is larger than the sum of its proper divisors (1366669).

73561752347 is a wasteful number, since it uses less digits than its factorization.

73561752347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366668.

The product of its digits is 3704400, while the sum is 50.

The spelling of 73561752347 in words is "seventy-three billion, five hundred sixty-one million, seven hundred fifty-two thousand, three hundred forty-seven".