49218856187904 has 384 divisors, whose sum is σ = 158403037665600. Its totient is φ = 15010218639360.

The previous prime is 49218856187849. The next prime is 49218856187933. The reversal of 49218856187904 is 40978165881294.

49218856187904 is a `hidden beast` number, since 49 + 2 + 18 + 8 + 561 + 8 + 7 + 9 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 80926864 + ... + 81532784.

Almost surely, 2^{49218856187904} 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 49218856187904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79201518832800).

49218856187904 is an abundant number, since it is smaller than the sum of its proper divisors (109184181477696).

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

49218856187904 is a wasteful number, since it uses less digits than its factorization.

49218856187904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606078 (or 606052 counting only the distinct ones).

The product of its (nonzero) digits is 278691840, while the sum is 72.

The spelling of 49218856187904 in words is "forty-nine trillion, two hundred eighteen billion, eight hundred fifty-six million, one hundred eighty-seven thousand, nine hundred four".