49551399648 has 96 divisors (see below), whose sum is σ = 145130227200. Its totient is φ = 16447955328.

The previous prime is 49551399613. The next prime is 49551399649. The reversal of 49551399648 is 84699315594.

49551399648 is a `hidden beast` number, since 4 + 9 + 551 + 39 + 9 + 6 + 48 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49551399649) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 86515 + ... + 326477.

It is an arithmetic number, because the mean of its divisors is an integer number (1511773200).

Almost surely, 2^49551399648 is an apocalyptic number.

49551399648 is a gapful number since it is divisible by the number (48) 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 49551399648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72565113600).

49551399648 is an abundant number, since it is smaller than the sum of its proper divisors (95578827552).

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

49551399648 is a wasteful number, since it uses less digits than its factorization.

49551399648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240221 (or 240207 counting only the distinct ones).

The product of its digits is 41990400, while the sum is 63.

The spelling of 49551399648 in words is "forty-nine billion, five hundred fifty-one million, three hundred ninety-nine thousand, six hundred forty-eight".