6516660100512 has 192 divisors, whose sum is σ = 17887631376384. Its totient is φ = 2074985579520.

The previous prime is 6516660100501. The next prime is 6516660100523. The reversal of 6516660100512 is 2150010666156.

It is an interprime number because it is at equal distance from previous prime (6516660100501) and next prime (6516660100523).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74412783 + ... + 74500305.

It is an arithmetic number, because the mean of its divisors is an integer number (93164746752).

Almost surely, 2^{6516660100512} is an apocalyptic number.

6516660100512 is a gapful number since it is divisible by the number (62) 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 6516660100512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8943815688192).

6516660100512 is an abundant number, since it is smaller than the sum of its proper divisors (11370971275872).

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

6516660100512 is a wasteful number, since it uses less digits than its factorization.

6516660100512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87891 (or 87883 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

Adding to 6516660100512 its reverse (2150010666156), we get a palindrome (8666670766668).

The spelling of 6516660100512 in words is "six trillion, five hundred sixteen billion, six hundred sixty million, one hundred thousand, five hundred twelve".