49072128013 has 2 divisors, whose sum is σ = 49072128014. Its totient is φ = 49072128012.

The previous prime is 49072127969. The next prime is 49072128041. The reversal of 49072128013 is 31082127094.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27989959204 + 21082168809 = 167302^2 + 145197^2 .

It is a cyclic number.

It is not a de Polignac number, because 49072128013 - 2⁹ = 49072127501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49072128113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24536064006 + 24536064007.

It is an arithmetic number, because the mean of its divisors is an integer number (24536064007).

Almost surely, 2^49072128013 is an apocalyptic number.

It is an amenable number.

49072128013 is a deficient number, since it is larger than the sum of its proper divisors (1).

49072128013 is an equidigital number, since it uses as much as digits as its factorization.

49072128013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 49072128013 in words is "forty-nine billion, seventy-two million, one hundred twenty-eight thousand, thirteen".