55063772440 has 32 divisors (see below), whose sum is σ = 126915284160. Its totient is φ = 21488300800.

The previous prime is 55063772437. The next prime is 55063772443. The reversal of 55063772440 is 4427736055.

It is an interprime number because it is at equal distance from previous prime (55063772437) and next prime (55063772443).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55063772443) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16786096 + ... + 16789375.

It is an arithmetic number, because the mean of its divisors is an integer number (3966102630).

Almost surely, 2^55063772440 is an apocalyptic number.

It is an amenable number.

55063772440 is an abundant number, since it is smaller than the sum of its proper divisors (71851511720).

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

55063772440 is a wasteful number, since it uses less digits than its factorization.

55063772440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33575523 (or 33575519 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 43.

The spelling of 55063772440 in words is "fifty-five billion, sixty-three million, seven hundred seventy-two thousand, four hundred forty".