49522867128 has 512 divisors, whose sum is σ = 171859968000. Its totient is φ = 12905671680.

The previous prime is 49522867123. The next prime is 49522867139. The reversal of 49522867128 is 82176822594.

49522867128 is a `hidden beast` number, since 49 + 522 + 8 + 6 + 71 + 2 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49522867123) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 67012983 + ... + 67013721.

It is an arithmetic number, because the mean of its divisors is an integer number (335664000).

Almost surely, 2^49522867128 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 49522867128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85929984000).

49522867128 is an abundant number, since it is smaller than the sum of its proper divisors (122337100872).

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

49522867128 is a wasteful number, since it uses less digits than its factorization.

49522867128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872 (or 862 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The spelling of 49522867128 in words is "forty-nine billion, five hundred twenty-two million, eight hundred sixty-seven thousand, one hundred twenty-eight".