49897838261 has 4 divisors (see below), whose sum is σ = 49898637024. Its totient is φ = 49897039500.

The previous prime is 49897838233. The next prime is 49897838273. The reversal of 49897838261 is 16283879894.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 49897838261 - 2¹⁰ = 49897837237 is a prime.

It is a super-3 number, since 3×49897838261³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49897838231) 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, 296915 + ... + 433536.

It is an arithmetic number, because the mean of its divisors is an integer number (12474659256).

Almost surely, 2^49897838261 is an apocalyptic number.

It is an amenable number.

49897838261 is a deficient number, since it is larger than the sum of its proper divisors (798763).

49897838261 is an equidigital number, since it uses as much as digits as its factorization.

49897838261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798762.

The product of its digits is 41803776, while the sum is 65.

The spelling of 49897838261 in words is "forty-nine billion, eight hundred ninety-seven million, eight hundred thirty-eight thousand, two hundred sixty-one".