23816198406 has 192 divisors, whose sum is σ = 66186860544. Its totient is φ = 5555278080.

The previous prime is 23816198387. The next prime is 23816198429. The reversal of 23816198406 is 60489161832.

It is a super-2 number, since 2×23816198406² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 2439571 + ... + 2449313.

It is an arithmetic number, because the mean of its divisors is an integer number (344723232).

Almost surely, 2^23816198406 is an apocalyptic number.

23816198406 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 23816198406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33093430272).

23816198406 is an abundant number, since it is smaller than the sum of its proper divisors (42370662138).

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

23816198406 is a wasteful number, since it uses less digits than its factorization.

23816198406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9827 (or 9816 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

It can be divided in two parts, 23816 and 198406, that added together give a palindrome (222222).

The spelling of 23816198406 in words is "twenty-three billion, eight hundred sixteen million, one hundred ninety-eight thousand, four hundred six".