49251181056 has 960 divisors, whose sum is σ = 182714019840. Its totient is φ = 11612160000.

The previous prime is 49251181039. The next prime is 49251181103. The reversal of 49251181056 is 65018115294.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 49251180999 and 49251181017.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 487635406 + ... + 487635506.

It is an arithmetic number, because the mean of its divisors is an integer number (190327104).

Almost surely, 2^49251181056 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 49251181056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91357009920).

49251181056 is an abundant number, since it is smaller than the sum of its proper divisors (133462838784).

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

49251181056 is a wasteful number, since it uses less digits than its factorization.

49251181056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 42.

The spelling of 49251181056 in words is "forty-nine billion, two hundred fifty-one million, one hundred eighty-one thousand, fifty-six".