551949189120 has 1440 divisors, whose sum is σ = 2411391161088. Its totient is φ = 118229041152.

The previous prime is 551949189109. The next prime is 551949189131. The reversal of 551949189120 is 21981949155.

551949189120 is a `hidden beast` number, since 5 + 51 + 9 + 491 + 89 + 1 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (551949189109) and next prime (551949189131).

It is a tau number, because it is divible by the number of its divisors (1440).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2368880524 + ... + 2368880756.

Almost surely, 2^551949189120 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 551949189120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1205695580544).

551949189120 is an abundant number, since it is smaller than the sum of its proper divisors (1859441971968).

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

551949189120 is an equidigital number, since it uses as much as digits as its factorization.

551949189120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 54.

The spelling of 551949189120 in words is "five hundred fifty-one billion, nine hundred forty-nine million, one hundred eighty-nine thousand, one hundred twenty".