55512612404340 has 384 divisors, whose sum is σ = 191939366707200. Its totient is φ = 11673743542272.

The previous prime is 55512612404297. The next prime is 55512612404357. The reversal of 55512612404340 is 4340421621555.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 55512612404292 and 55512612404301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5417445097 + ... + 5417455343.

It is an arithmetic number, because the mean of its divisors is an integer number (499842100800).

Almost surely, 2^{55512612404340} 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 55512612404340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95969683353600).

55512612404340 is an abundant number, since it is smaller than the sum of its proper divisors (136426754302860).

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

55512612404340 is a wasteful number, since it uses less digits than its factorization.

55512612404340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13471 (or 13469 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 55512612404340 in words is "fifty-five trillion, five hundred twelve billion, six hundred twelve million, four hundred four thousand, three hundred forty".