49589385978 has 16 divisors (see below), whose sum is σ = 108195024096. Its totient is φ = 15027086640.

The previous prime is 49589385971. The next prime is 49589385997. The reversal of 49589385978 is 87958398594.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49589385971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375677101 + ... + 375677232.

It is an arithmetic number, because the mean of its divisors is an integer number (6762189006).

Almost surely, 2^49589385978 is an apocalyptic number.

49589385978 is an abundant number, since it is smaller than the sum of its proper divisors (58605638118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49589385978 is a wasteful number, since it uses less digits than its factorization.

49589385978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751354349.

The product of its digits is 783820800, while the sum is 75.

The spelling of 49589385978 in words is "forty-nine billion, five hundred eighty-nine million, three hundred eighty-five thousand, nine hundred seventy-eight".