49921751880 has 1536 divisors, whose sum is σ = 239457254400. Its totient is φ = 8670412800.

The previous prime is 49921751849. The next prime is 49921751899. The reversal of 49921751880 is 8815712994.

It is a happy number.

49921751880 is a `hidden beast` number, since 49 + 9 + 2 + 1 + 7 + 518 + 80 = 666.

It is a super-3 number, since 3×49921751880³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 177657340 + ... + 177657620.

It is an arithmetic number, because the mean of its divisors is an integer number (155896650).

Almost surely, 2^49921751880 is an apocalyptic number.

49921751880 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 49921751880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119728627200).

49921751880 is an abundant number, since it is smaller than the sum of its proper divisors (189535502520).

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

49921751880 is a wasteful number, since it uses less digits than its factorization.

49921751880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 54.

The spelling of 49921751880 in words is "forty-nine billion, nine hundred twenty-one million, seven hundred fifty-one thousand, eight hundred eighty".