55247624640 has 1344 divisors, whose sum is σ = 229634076672. Its totient is φ = 12541132800.

The previous prime is 55247624639. The next prime is 55247624669. The reversal of 55247624640 is 4642674255.

55247624640 is a `hidden beast` number, since 5 + 524 + 7 + 62 + 4 + 64 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 191 ways as a sum of consecutive naturals, for example, 1284828459 + ... + 1284828501.

It is an arithmetic number, because the mean of its divisors is an integer number (170858688).

Almost surely, 2^55247624640 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 55247624640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114817038336).

55247624640 is an abundant number, since it is smaller than the sum of its proper divisors (174386452032).

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

55247624640 is a wasteful number, since it uses less digits than its factorization.

55247624640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 45.

The spelling of 55247624640 in words is "fifty-five billion, two hundred forty-seven million, six hundred twenty-four thousand, six hundred forty".