49615551216 has 320 divisors, whose sum is σ = 179398517760. Its totient is φ = 12753469440.

The previous prime is 49615551197. The next prime is 49615551221. The reversal of 49615551216 is 61215551694.

49615551216 is a `hidden beast` number, since 4 + 9 + 615 + 5 + 5 + 1 + 21 + 6 = 666.

49615551216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3218920 + ... + 3234296.

It is an arithmetic number, because the mean of its divisors is an integer number (560620368).

Almost surely, 2^49615551216 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 49615551216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89699258880).

49615551216 is an abundant number, since it is smaller than the sum of its proper divisors (129782966544).

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

49615551216 is a wasteful number, since it uses less digits than its factorization.

49615551216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15509 (or 15497 counting only the distinct ones).

The product of its digits is 324000, while the sum is 45.

The spelling of 49615551216 in words is "forty-nine billion, six hundred fifteen million, five hundred fifty-one thousand, two hundred sixteen".