8154580212 has 36 divisors (see below), whose sum is σ = 21001895460. Its totient is φ = 2666906112.

The previous prime is 8154580177. The next prime is 8154580249. The reversal of 8154580212 is 2120854518.

8154580212 is a `hidden beast` number, since 8 + 1 + 54 + 580 + 21 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4573275876 + 3581304336 = 67626^2 + 59844^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2135037 + ... + 2138852.

It is an arithmetic number, because the mean of its divisors is an integer number (583385985).

Almost surely, 2^8154580212 is an apocalyptic number.

It is an amenable number.

8154580212 is an abundant number, since it is smaller than the sum of its proper divisors (12847315248).

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

8154580212 is a wasteful number, since it uses less digits than its factorization.

8154580212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4273952 (or 4273947 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 36.

The square root of 8154580212 is about 90302.7143113650. The cubic root of 8154580212 is about 2012.7995947741.

The spelling of 8154580212 in words is "eight billion, one hundred fifty-four million, five hundred eighty thousand, two hundred twelve".