216880452328540 has 384 divisors, whose sum is σ = 617350472073216. Its totient is φ = 61803630720000.

The previous prime is 216880452328523. The next prime is 216880452328583. The reversal of 216880452328540 is 45823254088612.

It is a super-2 number, since 2×216880452328540² (a number of 29 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 19174289485 + ... + 19174300795.

It is an arithmetic number, because the mean of its divisors is an integer number (1607683521024).

Almost surely, 2^{216880452328540} is an apocalyptic number.

216880452328540 is a gapful number since it is divisible by the number (20) 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 216880452328540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308675236036608).

216880452328540 is an abundant number, since it is smaller than the sum of its proper divisors (400470019744676).

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

216880452328540 is a wasteful number, since it uses less digits than its factorization.

216880452328540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20409 (or 20407 counting only the distinct ones).

The product of its (nonzero) digits is 29491200, while the sum is 58.

The spelling of 216880452328540 in words is "two hundred sixteen trillion, eight hundred eighty billion, four hundred fifty-two million, three hundred twenty-eight thousand, five hundred forty".