49646428440 has 128 divisors (see below), whose sum is σ = 170285621760. Its totient is φ = 11343135744.

The previous prime is 49646428427. The next prime is 49646428511. The reversal of 49646428440 is 4482464694.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2322039 + ... + 2343321.

It is an arithmetic number, because the mean of its divisors is an integer number (1330356420).

Almost surely, 2^49646428440 is an apocalyptic number.

49646428440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49646428440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85142810880).

49646428440 is an abundant number, since it is smaller than the sum of its proper divisors (120639193320).

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

49646428440 is a wasteful number, since it uses less digits than its factorization.

49646428440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24081 (or 24077 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 51.

The spelling of 49646428440 in words is "forty-nine billion, six hundred forty-six million, four hundred twenty-eight thousand, four hundred forty".