216313552026 has 384 divisors, whose sum is σ = 583446528000. Its totient is φ = 58994179200.

The previous prime is 216313552009. The next prime is 216313552051. The reversal of 216313552026 is 620255313612.

216313552026 is a `hidden beast` number, since 21 + 63 + 1 + 3 + 552 + 0 + 26 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1087002675 + ... + 1087002873.

It is an arithmetic number, because the mean of its divisors is an integer number (1519392000).

Almost surely, 2^216313552026 is an apocalyptic number.

216313552026 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 216313552026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291723264000).

216313552026 is an abundant number, since it is smaller than the sum of its proper divisors (367132975974).

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

216313552026 is a wasteful number, since it uses less digits than its factorization.

216313552026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 216313552026 its reverse (620255313612), we get a palindrome (836568865638).

The spelling of 216313552026 in words is "two hundred sixteen billion, three hundred thirteen million, five hundred fifty-two thousand, twenty-six".