16158516891552 has 576 divisors, whose sum is σ = 55931623372800. Its totient is φ = 4524329779200.

The previous prime is 16158516891467. The next prime is 16158516891581. The reversal of 16158516891552 is 25519861585161.

16158516891552 is a `hidden beast` number, since 1 + 6 + 1 + 58 + 516 + 8 + 9 + 15 + 52 = 666.

It is a super-2 number, since 2×16158516891552² (a number of 27 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 16158516891552.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 425754177 + ... + 425792127.

It is an arithmetic number, because the mean of its divisors is an integer number (97103512800).

Almost surely, 2^{16158516891552} is an apocalyptic number.

16158516891552 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 16158516891552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27965811686400).

16158516891552 is an abundant number, since it is smaller than the sum of its proper divisors (39773106481248).

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

16158516891552 is a wasteful number, since it uses less digits than its factorization.

16158516891552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38186 (or 38165 counting only the distinct ones).

The product of its digits is 25920000, while the sum is 63.

The spelling of 16158516891552 in words is "sixteen trillion, one hundred fifty-eight billion, five hundred sixteen million, eight hundred ninety-one thousand, five hundred fifty-two".