49123289968 has 20 divisors (see below), whose sum is σ = 99314478288. Its totient is φ = 23493747200.

The previous prime is 49123289923. The next prime is 49123289983. The reversal of 49123289968 is 86998232194.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66743233 + ... + 66743968.

Almost surely, 2^49123289968 is an apocalyptic number.

It is an amenable number.

49123289968 is an abundant number, since it is smaller than the sum of its proper divisors (50191188320).

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

49123289968 is a wasteful number, since it uses less digits than its factorization.

49123289968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133487232 (or 133487226 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 61.

The spelling of 49123289968 in words is "forty-nine billion, one hundred twenty-three million, two hundred eighty-nine thousand, nine hundred sixty-eight".