49990705169 has 16 divisors (see below), whose sum is σ = 50926961664. Its totient is φ = 49061376000.

The previous prime is 49990705157. The next prime is 49990705181. The reversal of 49990705169 is 96150709994.

It is an interprime number because it is at equal distance from previous prime (49990705157) and next prime (49990705181).

It is a cyclic number.

It is not a de Polignac number, because 49990705169 - 2⁸ = 49990704913 is a prime.

It is a super-2 number, since 2×49990705169² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49990705139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25622144 + ... + 25624094.

It is an arithmetic number, because the mean of its divisors is an integer number (3182935104).

Almost surely, 2^49990705169 is an apocalyptic number.

It is an amenable number.

49990705169 is a deficient number, since it is larger than the sum of its proper divisors (936256495).

49990705169 is a wasteful number, since it uses less digits than its factorization.

49990705169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3488.

The product of its (nonzero) digits is 5511240, while the sum is 59.

The spelling of 49990705169 in words is "forty-nine billion, nine hundred ninety million, seven hundred five thousand, one hundred sixty-nine".