50571397465 has 4 divisors (see below), whose sum is σ = 60685676964. Its totient is φ = 40457117968.

The previous prime is 50571397447. The next prime is 50571397501. The reversal of 50571397465 is 56479317505.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18853212249 + 31718185216 = 137307^2 + 178096^2 .

It is a cyclic number.

It is not a de Polignac number, because 50571397465 - 2¹¹ = 50571395417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5057139742 + ... + 5057139751.

It is an arithmetic number, because the mean of its divisors is an integer number (15171419241).

Almost surely, 2^50571397465 is an apocalyptic number.

It is an amenable number.

50571397465 is a deficient number, since it is larger than the sum of its proper divisors (10114279499).

50571397465 is a wasteful number, since it uses less digits than its factorization.

50571397465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10114279498.

The product of its (nonzero) digits is 3969000, while the sum is 52.

The spelling of 50571397465 in words is "fifty billion, five hundred seventy-one million, three hundred ninety-seven thousand, four hundred sixty-five".