55315000000 has 448 divisors, whose sum is σ = 158352719616. Its totient is φ = 19008000000.

The previous prime is 55314999973. The next prime is 55315000003. The reversal of 55315000000 is 51355.

It is not an unprimeable number, because it can be changed into a prime (55315000003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1494999982 + ... + 1495000018.

It is an arithmetic number, because the mean of its divisors is an integer number (353465892).

Almost surely, 2^55315000000 is an apocalyptic number.

55315000000 is a gapful number since it is divisible by the number (50) 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 55315000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79176359808).

55315000000 is an abundant number, since it is smaller than the sum of its proper divisors (103037719616).

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

55315000000 is an frugal number, since it uses more digits than its factorization.

55315000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 375, while the sum is 19.

Adding to 55315000000 its reverse (51355), we get a palindrome (55315051355).

The spelling of 55315000000 in words is "fifty-five billion, three hundred fifteen million", and thus it is an aban number.