49351379220 has 768 divisors, whose sum is σ = 193566965760. Its totient is φ = 10264320000.

The previous prime is 49351379179. The next prime is 49351379227. The reversal of 49351379220 is 2297315394.

49351379220 is a `hidden beast` number, since 4 + 9 + 3 + 51 + 379 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49351379227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 65713845 + ... + 65714595.

It is an arithmetic number, because the mean of its divisors is an integer number (252040320).

Almost surely, 2^49351379220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49351379220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96783482880).

49351379220 is an abundant number, since it is smaller than the sum of its proper divisors (144215586540).

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

49351379220 is a wasteful number, since it uses less digits than its factorization.

49351379220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853 (or 845 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The spelling of 49351379220 in words is "forty-nine billion, three hundred fifty-one million, three hundred seventy-nine thousand, two hundred twenty".