55315403121132 has 240 divisors, whose sum is σ = 180313410638592. Its totient is φ = 14365551553920.

The previous prime is 55315403121119. The next prime is 55315403121151. The reversal of 55315403121132 is 23112130451355.

It is a happy number.

55315403121132 is a `hidden beast` number, since 5 + 5 + 3 + 1 + 5 + 403 + 1 + 211 + 32 = 666.

It is a super-2 number, since 2×55315403121132² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 175551358 + ... + 175866170.

Almost surely, 2^{55315403121132} 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 55315403121132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90156705319296).

55315403121132 is an abundant number, since it is smaller than the sum of its proper divisors (124998007517460).

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

55315403121132 is a wasteful number, since it uses less digits than its factorization.

55315403121132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321890 (or 321879 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

Adding to 55315403121132 its reverse (23112130451355), we get a palindrome (78427533572487).

The spelling of 55315403121132 in words is "fifty-five trillion, three hundred fifteen billion, four hundred three million, one hundred twenty-one thousand, one hundred thirty-two".