50478855521472 has 672 divisors, whose sum is σ = 178695120384000. Its totient is φ = 13918149181440.

The previous prime is 50478855521449. The next prime is 50478855521477. The reversal of 50478855521472 is 27412555887405.

It is a happy number.

50478855521472 is a `hidden beast` number, since 5 + 0 + 4 + 7 + 8 + 8 + 5 + 552 + 1 + 4 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a super-2 number, since 2×50478855521472² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (50478855521477) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 942287904 + ... + 942341472.

Almost surely, 2^{50478855521472} 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 50478855521472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89347560192000).

50478855521472 is an abundant number, since it is smaller than the sum of its proper divisors (128216264862528).

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

50478855521472 is a wasteful number, since it uses less digits than its factorization.

50478855521472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53994 (or 53971 counting only the distinct ones).

The product of its (nonzero) digits is 125440000, while the sum is 63.

The spelling of 50478855521472 in words is "fifty trillion, four hundred seventy-eight billion, eight hundred fifty-five million, five hundred twenty-one thousand, four hundred seventy-two".