16617665391360 has 288 divisors, whose sum is σ = 58082479031808. Its totient is φ = 4015651061760.

The previous prime is 16617665391359. The next prime is 16617665391377. The reversal of 16617665391360 is 6319356671661.

It is a happy number.

It is a super-2 number, since 2×16617665391360² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 16617665391294 and 16617665391303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12592669 + ... + 13849571.

It is an arithmetic number, because the mean of its divisors is an integer number (201675274416).

Almost surely, 2^{16617665391360} is an apocalyptic number.

16617665391360 is a gapful number since it is divisible by the number (10) 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 16617665391360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29041239515904).

16617665391360 is an abundant number, since it is smaller than the sum of its proper divisors (41464813640448).

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

16617665391360 is a wasteful number, since it uses less digits than its factorization.

16617665391360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257251 (or 1257237 counting only the distinct ones).

The product of its (nonzero) digits is 22044960, while the sum is 60.

The spelling of 16617665391360 in words is "sixteen trillion, six hundred seventeen billion, six hundred sixty-five million, three hundred ninety-one thousand, three hundred sixty".