49840171669 has 4 divisors (see below), whose sum is σ = 49843118560. Its totient is φ = 49837224780.

The previous prime is 49840171657. The next prime is 49840171687. The reversal of 49840171669 is 96617104894.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96617104894 = 2 ⋅48308552447.

It is a cyclic number.

It is not a de Polignac number, because 49840171669 - 2³⁵ = 15480433301 is a prime.

It is a super-2 number, since 2×49840171669² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49840171639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1447929 + ... + 1481950.

It is an arithmetic number, because the mean of its divisors is an integer number (12460779640).

Almost surely, 2^49840171669 is an apocalyptic number.

It is an amenable number.

49840171669 is a deficient number, since it is larger than the sum of its proper divisors (2946891).

49840171669 is a wasteful number, since it uses less digits than its factorization.

49840171669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2946890.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 49840171669 in words is "forty-nine billion, eight hundred forty million, one hundred seventy-one thousand, six hundred sixty-nine".