551134391004 has 120 divisors (see below), whose sum is σ = 1450658119680. Its totient is φ = 182455320096.

The previous prime is 551134390999. The next prime is 551134391039. The reversal of 551134391004 is 400193431155.

551134391004 is a `hidden beast` number, since 5 + 5 + 113 + 439 + 100 + 4 = 666.

It is a super-2 number, since 2×551134391004² (a number of 24 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 551134391004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 29648697 + ... + 29667279.

It is an arithmetic number, because the mean of its divisors is an integer number (12088817664).

Almost surely, 2^551134391004 is an apocalyptic number.

551134391004 is a gapful number since it is divisible by the number (54) 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 551134391004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725329059840).

551134391004 is an abundant number, since it is smaller than the sum of its proper divisors (899523728676).

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

551134391004 is a wasteful number, since it uses less digits than its factorization.

551134391004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19221 (or 19210 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 551134391004 in words is "five hundred fifty-one billion, one hundred thirty-four million, three hundred ninety-one thousand, four".