49784621568 has 80 divisors (see below), whose sum is σ = 144686605536. Its totient is φ = 15086243840.

The previous prime is 49784621561. The next prime is 49784621569. The reversal of 49784621568 is 86512648794.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (49784621561) 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, 1456371 + ... + 1490162.

Almost surely, 2^49784621568 is an apocalyptic number.

49784621568 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

49784621568 is an abundant number, since it is smaller than the sum of its proper divisors (94901983968).

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

49784621568 is a wasteful number, since it uses less digits than its factorization.

49784621568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2946565 (or 2946549 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 60.

The spelling of 49784621568 in words is "forty-nine billion, seven hundred eighty-four million, six hundred twenty-one thousand, five hundred sixty-eight".