49575721066 has 4 divisors (see below), whose sum is σ = 74363581602. Its totient is φ = 24787860532.

The previous prime is 49575721043. The next prime is 49575721099. The reversal of 49575721066 is 66012757594.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 37688398225 + 11887322841 = 194135^2 + 109029^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 12393930265 + ... + 12393930268.

Almost surely, 2^49575721066 is an apocalyptic number.

49575721066 is a deficient number, since it is larger than the sum of its proper divisors (24787860536).

49575721066 is a wasteful number, since it uses less digits than its factorization.

49575721066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24787860535.

The product of its (nonzero) digits is 3175200, while the sum is 52.

The spelling of 49575721066 in words is "forty-nine billion, five hundred seventy-five million, seven hundred twenty-one thousand, sixty-six".