49259139136 has 21 divisors (see below), whose sum is σ = 97752127711. Its totient is φ = 24628681792.

The previous prime is 49259139133. The next prime is 49259139143. The reversal of 49259139136 is 63193195294.

The square root of 49259139136 is 221944.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49259139133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1761681 + ... + 1789423.

Almost surely, 2^49259139136 is an apocalyptic number.

49259139136 is the 221944-th square number.

It is an amenable number.

49259139136 is a deficient number, since it is larger than the sum of its proper divisors (48492988575).

49259139136 is an frugal number, since it uses more digits than its factorization.

49259139136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55498 (or 27745 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 52.

The spelling of 49259139136 in words is "forty-nine billion, two hundred fifty-nine million, one hundred thirty-nine thousand, one hundred thirty-six".