49815051894 has 16 divisors (see below), whose sum is σ = 110700115440. Its totient is φ = 16605017280.

The previous prime is 49815051893. The next prime is 49815051899.

49815051894 is a `hidden beast` number, since 49 + 8 + 1 + 505 + 1 + 8 + 94 = 666.

49815051894 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 922500961 = 49815051894 / (4 + 9 + 8 + 1 + 5 + 0 + 5 + 1 + 8 + 9 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 49815051894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49815051893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461250427 + ... + 461250534.

It is an arithmetic number, because the mean of its divisors is an integer number (6918757215).

Almost surely, 2^49815051894 is an apocalyptic number.

49815051894 is an abundant number, since it is smaller than the sum of its proper divisors (60885063546).

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

49815051894 is a wasteful number, since it uses less digits than its factorization.

49815051894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922500972 (or 922500966 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 54.

The spelling of 49815051894 in words is "forty-nine billion, eight hundred fifteen million, fifty-one thousand, eight hundred ninety-four".