55387172022000 has 1280 divisors, whose sum is σ = 229550539825152. Its totient is φ = 11167336857600.

The previous prime is 55387172021983. The next prime is 55387172022029. The reversal of 55387172022000 is 22027178355.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 25028092894 + ... + 25028095106.

Almost surely, 2^{55387172022000} is an apocalyptic number.

55387172022000 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 55387172022000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114775269912576).

55387172022000 is an abundant number, since it is smaller than the sum of its proper divisors (174163367803152).

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

55387172022000 is a wasteful number, since it uses less digits than its factorization.

55387172022000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4275 (or 4259 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 42.

The spelling of 55387172022000 in words is "fifty-five trillion, three hundred eighty-seven billion, one hundred seventy-two million, twenty-two thousand".