16557007363512 has 128 divisors (see below), whose sum is σ = 51640692480000. Its totient is φ = 4297651747200.

The previous prime is 16557007363499. The next prime is 16557007363517. The reversal of 16557007363512 is 21536370075561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16557007363517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218314 + ... + 5758617.

It is an arithmetic number, because the mean of its divisors is an integer number (403442910000).

Almost surely, 2^{16557007363512} is an apocalyptic number.

16557007363512 is a gapful number since it is divisible by the number (12) 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 16557007363512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25820346240000).

16557007363512 is an abundant number, since it is smaller than the sum of its proper divisors (35083685116488).

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

16557007363512 is a wasteful number, since it uses less digits than its factorization.

16557007363512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5978457 (or 5978453 counting only the distinct ones).

The product of its (nonzero) digits is 3969000, while the sum is 51.

The spelling of 16557007363512 in words is "sixteen trillion, five hundred fifty-seven billion, seven million, three hundred sixty-three thousand, five hundred twelve".