73940331361 has 4 divisors (see below), whose sum is σ = 79628049172. Its totient is φ = 68252613552.

The previous prime is 73940331343. The next prime is 73940331379. The reversal of 73940331361 is 16313304937.

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

It is an interprime number because it is at equal distance from previous prime (73940331343) and next prime (73940331379).

It can be written as a sum of positive squares in 2 ways, for example, as 17566851600 + 56373479761 = 132540^2 + 237431^2 .

It is a cyclic number.

It is not a de Polignac number, because 73940331361 - 2¹⁷ = 73940200289 is a prime.

It is a super-2 number, since 2×73940331361² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73940331341) 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, 2843858886 + ... + 2843858911.

It is an arithmetic number, because the mean of its divisors is an integer number (19907012293).

Almost surely, 2^73940331361 is an apocalyptic number.

It is an amenable number.

73940331361 is a deficient number, since it is larger than the sum of its proper divisors (5687717811).

73940331361 is a wasteful number, since it uses less digits than its factorization.

73940331361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5687717810.

The product of its (nonzero) digits is 122472, while the sum is 40.

The spelling of 73940331361 in words is "seventy-three billion, nine hundred forty million, three hundred thirty-one thousand, three hundred sixty-one".