49236999840 has 288 divisors, whose sum is σ = 192718745856. Its totient is φ = 11213475840.

The previous prime is 49236999811. The next prime is 49236999859. The reversal of 49236999840 is 4899963294.

It is a happy number.

49236999840 is a `hidden beast` number, since 492 + 3 + 69 + 9 + 9 + 84 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2823789 + ... + 2841171.

It is an arithmetic number, because the mean of its divisors is an integer number (669162312).

Almost surely, 2^49236999840 is an apocalyptic number.

49236999840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49236999840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96359372928).

49236999840 is an abundant number, since it is smaller than the sum of its proper divisors (143481746016).

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

49236999840 is a wasteful number, since it uses less digits than its factorization.

49236999840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17692 (or 17681 counting only the distinct ones).

The product of its (nonzero) digits is 30233088, while the sum is 63.

It can be divided in two parts, 49236 and 999840, that added together give a triangular number (1049076 = T₁₄₄₈).

The spelling of 49236999840 in words is "forty-nine billion, two hundred thirty-six million, nine hundred ninety-nine thousand, eight hundred forty".