308469052136 has 64 divisors (see below), whose sum is σ = 667307731200. Its totient is φ = 130941370368.

The previous prime is 308469052123. The next prime is 308469052139. The reversal of 308469052136 is 631250964803.

It is a super-2 number, since 2×308469052136² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (308469052139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21130856 + ... + 21145448.

It is an arithmetic number, because the mean of its divisors is an integer number (10426683300).

Almost surely, 2^308469052136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 308469052136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333653865600).

308469052136 is an abundant number, since it is smaller than the sum of its proper divisors (358838679064).

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

308469052136 is a wasteful number, since it uses less digits than its factorization.

308469052136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18178 (or 18174 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 308469052136 in words is "three hundred eight billion, four hundred sixty-nine million, fifty-two thousand, one hundred thirty-six".