50166391913 has 4 divisors (see below), whose sum is σ = 54726973008. Its totient is φ = 45605810820.

The previous prime is 50166391897. The next prime is 50166391943. The reversal of 50166391913 is 31919366105.

It is a happy number.

50166391913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 50166391913 - 2⁴ = 50166391897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50166391943) 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, 2280290531 + ... + 2280290552.

It is an arithmetic number, because the mean of its divisors is an integer number (13681743252).

Almost surely, 2^50166391913 is an apocalyptic number.

It is an amenable number.

50166391913 is a deficient number, since it is larger than the sum of its proper divisors (4560581095).

50166391913 is a wasteful number, since it uses less digits than its factorization.

50166391913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4560581094.

The product of its (nonzero) digits is 131220, while the sum is 44.

The spelling of 50166391913 in words is "fifty billion, one hundred sixty-six million, three hundred ninety-one thousand, nine hundred thirteen".