49071981912 has 32 divisors (see below), whose sum is σ = 124232870400. Its totient is φ = 16150271904.

The previous prime is 49071981911. The next prime is 49071981919. The reversal of 49071981912 is 21918917094.

It is a happy number.

49071981912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49071981911) 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, 12939028 + ... + 12942819.

It is an arithmetic number, because the mean of its divisors is an integer number (3882277200).

Almost surely, 2^49071981912 is an apocalyptic number.

It is an amenable number.

49071981912 is an abundant number, since it is smaller than the sum of its proper divisors (75160888488).

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

49071981912 is a wasteful number, since it uses less digits than its factorization.

49071981912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25881935 (or 25881931 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 51.

The spelling of 49071981912 in words is "forty-nine billion, seventy-one million, nine hundred eighty-one thousand, nine hundred twelve".