216155563008 has 352 divisors, whose sum is σ = 721057551360. Its totient is φ = 55928586240.

The previous prime is 216155562977. The next prime is 216155563031. The reversal of 216155563008 is 800365551612.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (352).

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 66940338 + ... + 66943566.

Almost surely, 2^216155563008 is an apocalyptic number.

216155563008 is a gapful number since it is divisible by the number (28) 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 216155563008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360528775680).

216155563008 is an abundant number, since it is smaller than the sum of its proper divisors (504901988352).

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

216155563008 is a wasteful number, since it uses less digits than its factorization.

216155563008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3553 (or 3535 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 216155563008 in words is "two hundred sixteen billion, one hundred fifty-five million, five hundred sixty-three thousand, eight".