55120706732 has 144 divisors (see below), whose sum is σ = 126129104640. Its totient is φ = 20580708096.

The previous prime is 55120706681. The next prime is 55120706737. The reversal of 55120706732 is 23760702155.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (55120706737) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27600758 + ... + 27602754.

It is an arithmetic number, because the mean of its divisors is an integer number (875896560).

Almost surely, 2^55120706732 is an apocalyptic number.

55120706732 is a gapful number since it is divisible by the number (52) 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 55120706732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63064552320).

55120706732 is an abundant number, since it is smaller than the sum of its proper divisors (71008397908).

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

55120706732 is a wasteful number, since it uses less digits than its factorization.

55120706732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360 (or 2345 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 38.

The spelling of 55120706732 in words is "fifty-five billion, one hundred twenty million, seven hundred six thousand, seven hundred thirty-two".