73940127737 has 4 divisors (see below), whose sum is σ = 84503003136. Its totient is φ = 63377252340.

The previous prime is 73940127721. The next prime is 73940127757. The reversal of 73940127737 is 73772104937.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73772104937 = 4159 ⋅17737943.

It is a cyclic number.

It is not a de Polignac number, because 73940127737 - 2⁴ = 73940127721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73940127757) 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, 5281437689 + ... + 5281437702.

It is an arithmetic number, because the mean of its divisors is an integer number (21125750784).

Almost surely, 2^73940127737 is an apocalyptic number.

It is an amenable number.

73940127737 is a deficient number, since it is larger than the sum of its proper divisors (10562875399).

73940127737 is a wasteful number, since it uses less digits than its factorization.

73940127737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10562875398.

The product of its (nonzero) digits is 1555848, while the sum is 50.

The spelling of 73940127737 in words is "seventy-three billion, nine hundred forty million, one hundred twenty-seven thousand, seven hundred thirty-seven".