49781753549 has 32 divisors (see below), whose sum is σ = 55931904000. Its totient is φ = 43926696000.

The previous prime is 49781753521. The next prime is 49781753561. The reversal of 49781753549 is 94535718794.

It is a de Polignac number, because none of the positive numbers 2^k-49781753549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49781753491 and 49781753500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49781753509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16597952 + ... + 16600950.

It is an arithmetic number, because the mean of its divisors is an integer number (1747872000).

Almost surely, 2^49781753549 is an apocalyptic number.

It is an amenable number.

49781753549 is a deficient number, since it is larger than the sum of its proper divisors (6150150451).

49781753549 is a wasteful number, since it uses less digits than its factorization.

49781753549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3401.

The product of its digits is 38102400, while the sum is 62.

The spelling of 49781753549 in words is "forty-nine billion, seven hundred eighty-one million, seven hundred fifty-three thousand, five hundred forty-nine".