49178878320 has 640 divisors, whose sum is σ = 184438195200. Its totient is φ = 10746777600.

The previous prime is 49178878297. The next prime is 49178878337. The reversal of 49178878320 is 2387887194.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 353804811 + ... + 353804949.

It is an arithmetic number, because the mean of its divisors is an integer number (288184680).

Almost surely, 2^49178878320 is an apocalyptic number.

49178878320 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 49178878320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92219097600).

49178878320 is an abundant number, since it is smaller than the sum of its proper divisors (135259316880).

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

49178878320 is a wasteful number, since it uses less digits than its factorization.

49178878320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 57.

The spelling of 49178878320 in words is "forty-nine billion, one hundred seventy-eight million, eight hundred seventy-eight thousand, three hundred twenty".