6551011500000 has 672 divisors, whose sum is σ = 23687539295616. Its totient is φ = 1572000000000.

The previous prime is 6551011499959. The next prime is 6551011500041. The reversal of 6551011500000 is 51101556.

It is an interprime number because it is at equal distance from previous prime (6551011499959) and next prime (6551011500041).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 1666498035 + ... + 1666501965.

It is an arithmetic number, because the mean of its divisors is an integer number (35249314428).

Almost surely, 2^{6551011500000} is an apocalyptic number.

6551011500000 is a gapful number since it is divisible by the number (60) 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 6551011500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11843769647808).

6551011500000 is an abundant number, since it is smaller than the sum of its proper divisors (17136527795616).

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

6551011500000 is a wasteful number, since it uses less digits than its factorization.

6551011500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4086 (or 4053 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 24.

Adding to 6551011500000 its reverse (51101556), we get a palindrome (6551062601556).

The spelling of 6551011500000 in words is "six trillion, five hundred fifty-one billion, eleven million, five hundred thousand".