820152148133 has 4 divisors (see below), whose sum is σ = 823672114668. Its totient is φ = 816632181600.

The previous prime is 820152148097. The next prime is 820152148147. The reversal of 820152148133 is 331841251028.

820152148133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 434588148289 + 385563999844 = 659233^2 + 620938^2 .

It is a cyclic number.

It is not a de Polignac number, because 820152148133 - 2²² = 820147953829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820152148183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1759982918 + ... + 1759983383.

It is an arithmetic number, because the mean of its divisors is an integer number (205918028667).

Almost surely, 2^820152148133 is an apocalyptic number.

It is an amenable number.

820152148133 is a deficient number, since it is larger than the sum of its proper divisors (3519966535).

820152148133 is a wasteful number, since it uses less digits than its factorization.

820152148133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3519966534.

The product of its (nonzero) digits is 46080, while the sum is 38.

The spelling of 820152148133 in words is "eight hundred twenty billion, one hundred fifty-two million, one hundred forty-eight thousand, one hundred thirty-three".