181462612864 has 128 divisors (see below), whose sum is σ = 391796818560. Its totient is φ = 83220480000.

The previous prime is 181462612853. The next prime is 181462612871. The reversal of 181462612864 is 468216264181.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301934164 + ... + 301934764.

It is an arithmetic number, because the mean of its divisors is an integer number (3060912645).

Almost surely, 2^181462612864 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 181462612864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195898409280).

181462612864 is an abundant number, since it is smaller than the sum of its proper divisors (210334205696).

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

181462612864 is a wasteful number, since it uses less digits than its factorization.

181462612864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480 (or 1468 counting only the distinct ones).

The product of its digits is 884736, while the sum is 49.

The spelling of 181462612864 in words is "one hundred eighty-one billion, four hundred sixty-two million, six hundred twelve thousand, eight hundred sixty-four".