55135521300000 has 144 divisors (see below), whose sum is σ = 180901851790464. Its totient is φ = 14702805600000.

The previous prime is 55135521299959. The next prime is 55135521300017. The reversal of 55135521300000 is 312553155.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91592536 + ... + 92192535.

It is an arithmetic number, because the mean of its divisors is an integer number (1256262859656).

Almost surely, 2^{55135521300000} is an apocalyptic number.

55135521300000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55135521300000 is an abundant number, since it is smaller than the sum of its proper divisors (125766330490464).

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

55135521300000 is an equidigital number, since it uses as much as digits as its factorization.

55135521300000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183785109 (or 183785081 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 30.

Adding to 55135521300000 its reverse (312553155), we get a palindrome (55135833853155).

The spelling of 55135521300000 in words is "fifty-five trillion, one hundred thirty-five billion, five hundred twenty-one million, three hundred thousand".