50513217394 has 16 divisors (see below), whose sum is σ = 75949287480. Its totient is φ = 25196843520.

The previous prime is 50513217341. The next prime is 50513217397. The reversal of 50513217394 is 49371231505.

50513217394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 28548495369 + 21964722025 = 168963^2 + 148205^2 .

It is a super-3 number, since 3×50513217394³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (50513217397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1982254 + ... + 2007574.

Almost surely, 2^50513217394 is an apocalyptic number.

50513217394 is a deficient number, since it is larger than the sum of its proper divisors (25436070086).

50513217394 is a wasteful number, since it uses less digits than its factorization.

50513217394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27645.

The product of its (nonzero) digits is 113400, while the sum is 40.

Adding to 50513217394 its reverse (49371231505), we get a palindrome (99884448899).

The spelling of 50513217394 in words is "fifty billion, five hundred thirteen million, two hundred seventeen thousand, three hundred ninety-four".