49749948719 has 4 divisors (see below), whose sum is σ = 49943528544. Its totient is φ = 49556368896.

The previous prime is 49749948697. The next prime is 49749948739. The reversal of 49749948719 is 91784994794.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91784994794 = 2 ⋅45892497397.

It is a cyclic number.

It is not a de Polignac number, because 49749948719 - 2⁸ = 49749948463 is a prime.

It is a super-2 number, since 2×49749948719² (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 (49749948739) 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, 96789527 + ... + 96790040.

It is an arithmetic number, because the mean of its divisors is an integer number (12485882136).

Almost surely, 2^49749948719 is an apocalyptic number.

49749948719 is a deficient number, since it is larger than the sum of its proper divisors (193579825).

49749948719 is a wasteful number, since it uses less digits than its factorization.

49749948719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193579824.

The product of its digits is 164602368, while the sum is 71.

The spelling of 49749948719 in words is "forty-nine billion, seven hundred forty-nine million, nine hundred forty-eight thousand, seven hundred nineteen".