49277784197 has 4 divisors (see below), whose sum is σ = 49401909996. Its totient is φ = 49153658400.

The previous prime is 49277784151. The next prime is 49277784203. The reversal of 49277784197 is 79148777294.

49277784197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 221986²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79148777294 = 2 ⋅39574388647.

It can be written as a sum of positive squares in 2 ways, for example, as 33024339076 + 16253445121 = 181726^2 + 127489^2 .

It is a cyclic number.

It is not a de Polignac number, because 49277784197 - 2²⁰ = 49276735621 is a prime.

It is a super-2 number, since 2×49277784197² (a number of 22 digits) contains 22 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 (49277784397) 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, 62062304 + ... + 62063097.

It is an arithmetic number, because the mean of its divisors is an integer number (12350477499).

Almost surely, 2^49277784197 is an apocalyptic number.

It is an amenable number.

49277784197 is a deficient number, since it is larger than the sum of its proper divisors (124125799).

49277784197 is a wasteful number, since it uses less digits than its factorization.

49277784197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124125798.

The product of its digits is 49787136, while the sum is 65.

The spelling of 49277784197 in words is "forty-nine billion, two hundred seventy-seven million, seven hundred eighty-four thousand, one hundred ninety-seven".