49739988910613 has 4 divisors (see below), whose sum is σ = 49740064532460. Its totient is φ = 49739913288768.

The previous prime is 49739988910609. The next prime is 49739988910643. The reversal of 49739988910613 is 31601988993794.

49739988910613 = 4986982² + 4986983².

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

It can be written as a sum of positive squares in 2 ways, for example, as 24869989468324 + 24869999442289 = 4986982^2 + 4986983^2 .

It is a cyclic number.

It is not a de Polignac number, because 49739988910613 - 2² = 49739988910609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49739988910643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36815570 + ... + 38142707.

It is an arithmetic number, because the mean of its divisors is an integer number (12435016133115).

Almost surely, 2^{49739988910613} is an apocalyptic number.

49739988910613 is the 4986983-rd centered square number.

It is an amenable number.

49739988910613 is a deficient number, since it is larger than the sum of its proper divisors (75621847).

49739988910613 is an equidigital number, since it uses as much as digits as its factorization.

49739988910613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75621846.

The product of its (nonzero) digits is 634894848, while the sum is 77.

The spelling of 49739988910613 in words is "forty-nine trillion, seven hundred thirty-nine billion, nine hundred eighty-eight million, nine hundred ten thousand, six hundred thirteen".