49309122778 has 48 divisors (see below), whose sum is σ = 80821861344. Its totient is φ = 22541379840.

The previous prime is 49309122773. The next prime is 49309122799. The reversal of 49309122778 is 87722190394.

49309122778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (49309122773) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17342625 + ... + 17345467.

It is an arithmetic number, because the mean of its divisors is an integer number (1683788778).

Almost surely, 2^49309122778 is an apocalyptic number.

49309122778 is a deficient number, since it is larger than the sum of its proper divisors (31512738566).

49309122778 is a wasteful number, since it uses less digits than its factorization.

49309122778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3727 (or 3710 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 49309122778 in words is "forty-nine billion, three hundred nine million, one hundred twenty-two thousand, seven hundred seventy-eight".