49778488971 has 12 divisors (see below), whose sum is σ = 71905056600. Its totient is φ = 33184369440.

The previous prime is 49778488939. The next prime is 49778488999. The reversal of 49778488971 is 17988487794.

49778488971 is a `hidden beast` number, since 4 + 9 + 7 + 78 + 488 + 9 + 71 = 666.

It is not a de Polignac number, because 49778488971 - 2⁵ = 49778488939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49778488971.

It is not an unprimeable number, because it can be changed into a prime (49778488871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176380 + ... + 361478.

It is an arithmetic number, because the mean of its divisors is an integer number (5992088050).

Almost surely, 2^49778488971 is an apocalyptic number.

49778488971 is a deficient number, since it is larger than the sum of its proper divisors (22126567629).

49778488971 is a wasteful number, since it uses less digits than its factorization.

49778488971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214986 (or 214983 counting only the distinct ones).

The product of its digits is 227598336, while the sum is 72.

It can be divided in two parts, 4977 and 8488971, that added together give a palindrome (8493948).

The spelling of 49778488971 in words is "forty-nine billion, seven hundred seventy-eight million, four hundred eighty-eight thousand, nine hundred seventy-one".