49720453689 has 4 divisors (see below), whose sum is σ = 66293938256. Its totient is φ = 33146969124.

The previous prime is 49720453663. The next prime is 49720453691. The reversal of 49720453689 is 98635402794.

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.

It is not a de Polignac number, because 49720453689 - 2⁷ = 49720453561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49720453889) 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, 8286742279 + ... + 8286742284.

It is an arithmetic number, because the mean of its divisors is an integer number (16573484564).

Almost surely, 2^49720453689 is an apocalyptic number.

It is an amenable number.

49720453689 is a deficient number, since it is larger than the sum of its proper divisors (16573484567).

49720453689 is a wasteful number, since it uses less digits than its factorization.

49720453689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16573484566.

The product of its (nonzero) digits is 13063680, while the sum is 57.

The spelling of 49720453689 in words is "forty-nine billion, seven hundred twenty million, four hundred fifty-three thousand, six hundred eighty-nine".