551290121200 has 360 divisors, whose sum is σ = 1690579483488. Its totient is φ = 171178076160.

The previous prime is 551290121143. The next prime is 551290121201. The reversal of 551290121200 is 2121092155.

551290121200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551290121201) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 13483989 + ... + 13524811.

Almost surely, 2^551290121200 is an apocalyptic number.

551290121200 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 551290121200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (845289741744).

551290121200 is an abundant number, since it is smaller than the sum of its proper divisors (1139289362288).

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

551290121200 is a wasteful number, since it uses less digits than its factorization.

551290121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40921 (or 40903 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 28.

The spelling of 551290121200 in words is "five hundred fifty-one billion, two hundred ninety million, one hundred twenty-one thousand, two hundred".