50397989693 has 8 divisors (see below), whose sum is σ = 55083951360. Its totient is φ = 45903291840.

The previous prime is 50397989657. The next prime is 50397989699. The reversal of 50397989693 is 39698979305.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 50397989693 - 2⁸ = 50397989437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50397989699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47815403 + ... + 47816456.

It is an arithmetic number, because the mean of its divisors is an integer number (6885493920).

Almost surely, 2^50397989693 is an apocalyptic number.

It is an amenable number.

50397989693 is a deficient number, since it is larger than the sum of its proper divisors (4685961667).

50397989693 is a wasteful number, since it uses less digits than its factorization.

50397989693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95631907.

The product of its (nonzero) digits is 99202320, while the sum is 68.

The spelling of 50397989693 in words is "fifty billion, three hundred ninety-seven million, nine hundred eighty-nine thousand, six hundred ninety-three".