49287861456 has 80 divisors (see below), whose sum is σ = 134982842688. Its totient is φ = 15443814400.

The previous prime is 49287861437. The next prime is 49287861551. The reversal of 49287861456 is 65416878294.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 49287861456.

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 15 ways as a sum of consecutive naturals, for example, 633151 + ... + 706721.

Almost surely, 2^49287861456 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 49287861456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67491421344).

49287861456 is an abundant number, since it is smaller than the sum of its proper divisors (85694981232).

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

49287861456 is a wasteful number, since it uses less digits than its factorization.

49287861456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74420 (or 74414 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 60.

The spelling of 49287861456 in words is "forty-nine billion, two hundred eighty-seven million, eight hundred sixty-one thousand, four hundred fifty-six".