215439069132 has 72 divisors (see below), whose sum is σ = 623797574400. Its totient is φ = 61413774048.

The previous prime is 215439069113. The next prime is 215439069133. The reversal of 215439069132 is 231960934512.

215439069132 is a `hidden beast` number, since 2 + 1 + 543 + 90 + 6 + 9 + 13 + 2 = 666.

215439069132 is digitally balanced in base 2 and base 7, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (215439069133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 863082 + ... + 1084337.

It is an arithmetic number, because the mean of its divisors is an integer number (8663855200).

Almost surely, 2^215439069132 is an apocalyptic number.

It is an amenable number.

215439069132 is an abundant number, since it is smaller than the sum of its proper divisors (408358505268).

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

215439069132 is a wasteful number, since it uses less digits than its factorization.

215439069132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947875 (or 1947870 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 215439069132 in words is "two hundred fifteen billion, four hundred thirty-nine million, sixty-nine thousand, one hundred thirty-two".