6551712749736 has 640 divisors, whose sum is σ = 23346196070400. Its totient is φ = 1688157313920.

The previous prime is 6551712749723. The next prime is 6551712749741. The reversal of 6551712749736 is 6379472171556.

6551712749736 is a `hidden beast` number, since 6 + 5 + 5 + 17 + 127 + 497 + 3 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 724502031 + ... + 724511073.

It is an arithmetic number, because the mean of its divisors is an integer number (36478431360).

Almost surely, 2^{6551712749736} is an apocalyptic number.

6551712749736 is a gapful number since it is divisible by the number (66) 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 6551712749736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11673098035200).

6551712749736 is an abundant number, since it is smaller than the sum of its proper divisors (16794483320664).

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

6551712749736 is a wasteful number, since it uses less digits than its factorization.

6551712749736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9224 (or 9193 counting only the distinct ones).

The product of its digits is 66679200, while the sum is 63.

The spelling of 6551712749736 in words is "six trillion, five hundred fifty-one billion, seven hundred twelve million, seven hundred forty-nine thousand, seven hundred thirty-six".