806154375321 has 9 divisors (see below), whose sum is σ = 1164449099541. Its totient is φ = 537434454492.

The previous prime is 806154375287. The next prime is 806154375329. The reversal of 806154375321 is 123573451608.

It is a happy number.

The square root of 806154375321 is 897861.

It is a perfect power (a square), and thus also a powerful number.

806154375321 is a `hidden beast` number, since 8 + 0 + 6 + 1 + 543 + 75 + 32 + 1 = 666.

806154375321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 806154375321 - 2¹³ = 806154367129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (806154375329) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2543940 + ... + 2843226.

Almost surely, 2^806154375321 is an apocalyptic number.

806154375321 is the 897861-st square number.

806154375321 is the 448931-st centered octagonal number.

It is an amenable number.

806154375321 is a deficient number, since it is larger than the sum of its proper divisors (358294724220).

806154375321 is an frugal number, since it uses more digits than its factorization.

806154375321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598580 (or 299290 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 806154375321 in words is "eight hundred six billion, one hundred fifty-four million, three hundred seventy-five thousand, three hundred twenty-one".