49809170123 has 4 divisors (see below), whose sum is σ = 49865708088. Its totient is φ = 49752632160.

The previous prime is 49809170101. The next prime is 49809170161. The reversal of 49809170123 is 32107190894.

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

It is a cyclic number.

It is not a de Polignac number, because 49809170123 - 2²² = 49804975819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49809170923) 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, 28267661 + ... + 28269422.

It is an arithmetic number, because the mean of its divisors is an integer number (12466427022).

Almost surely, 2^49809170123 is an apocalyptic number.

49809170123 is a deficient number, since it is larger than the sum of its proper divisors (56537965).

49809170123 is an equidigital number, since it uses as much as digits as its factorization.

49809170123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56537964.

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 49809170123 in words is "forty-nine billion, eight hundred nine million, one hundred seventy thousand, one hundred twenty-three".