2153661104052 has 60 divisors (see below), whose sum is σ = 5651025492420. Its totient is φ = 715218280704.

The previous prime is 2153661103897. The next prime is 2153661104069. The reversal of 2153661104052 is 2504011663512.

2153661104052 is a `hidden beast` number, since 2 + 1 + 5 + 36 + 611 + 0 + 4 + 0 + 5 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 342709551396 + 1810951552656 = 585414^2 + 1345716^2 .

It is a super-2 number, since 2×2153661104052² (a number of 25 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 2153661103998 and 2153661104016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12268053 + ... + 12442364.

It is an arithmetic number, because the mean of its divisors is an integer number (94183758207).

Almost surely, 2^{2153661104052} is an apocalyptic number.

It is an amenable number.

2153661104052 is an abundant number, since it is smaller than the sum of its proper divisors (3497364388368).

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

2153661104052 is a wasteful number, since it uses less digits than its factorization.

2153661104052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24710702 (or 24710691 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 2153661104052 its reverse (2504011663512), we get a palindrome (4657672767564).

The spelling of 2153661104052 in words is "two trillion, one hundred fifty-three billion, six hundred sixty-one million, one hundred four thousand, fifty-two".