5551186368 has 448 divisors, whose sum is σ = 19233579008. Its totient is φ = 1373552640.

The previous prime is 5551186363. The next prime is 5551186369. The reversal of 5551186368 is 8636811555.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5551186363) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20040246 + ... + 20040522.

It is an arithmetic number, because the mean of its divisors is an integer number (42932096).

Almost surely, 2^5551186368 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 5551186368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9616789504).

5551186368 is an abundant number, since it is smaller than the sum of its proper divisors (13682392640).

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

5551186368 is a wasteful number, since it uses less digits than its factorization.

5551186368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380 (or 370 counting only the distinct ones).

The product of its digits is 864000, while the sum is 48.

The square root of 5551186368 is about 74506.2840839617. The cubic root of 5551186368 is about 1770.6331980759.

The spelling of 5551186368 in words is "five billion, five hundred fifty-one million, one hundred eighty-six thousand, three hundred sixty-eight".