2165235154452 has 36 divisors (see below), whose sum is σ = 5661965492820. Its totient is φ = 696857290752.

The previous prime is 2165235154429. The next prime is 2165235154471. The reversal of 2165235154452 is 2544515325612.

2165235154452 is a `hidden beast` number, since 2 + 1 + 6 + 5 + 2 + 3 + 51 + 544 + 52 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 926052083856 + 1239183070596 = 962316^2 + 1113186^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2165235154398 and 2165235154407.

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, 1036988973 + ... + 1036991060.

It is an arithmetic number, because the mean of its divisors is an integer number (157276819245).

Almost surely, 2^{2165235154452} is an apocalyptic number.

It is an amenable number.

2165235154452 is an abundant number, since it is smaller than the sum of its proper divisors (3496730338368).

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

2165235154452 is a wasteful number, since it uses less digits than its factorization.

2165235154452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2073980072 (or 2073980067 counting only the distinct ones).

The product of its digits is 1440000, while the sum is 45.

The spelling of 2165235154452 in words is "two trillion, one hundred sixty-five billion, two hundred thirty-five million, one hundred fifty-four thousand, four hundred fifty-two".