20453352153655 has 4 divisors (see below), whose sum is σ = 24544022584392. Its totient is φ = 16362681722920.

The previous prime is 20453352153653. The next prime is 20453352153721. The reversal of 20453352153655 is 55635125335402.

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

It is not a de Polignac number, because 20453352153655 - 2¹ = 20453352153653 is a prime.

It is a super-2 number, since 2×20453352153655² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20453352153599 and 20453352153608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20453352153653) 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, 2045335215361 + ... + 2045335215370.

It is an arithmetic number, because the mean of its divisors is an integer number (6136005646098).

Almost surely, 2^{20453352153655} is an apocalyptic number.

20453352153655 is a deficient number, since it is larger than the sum of its proper divisors (4090670430737).

20453352153655 is an equidigital number, since it uses as much as digits as its factorization.

20453352153655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4090670430736.

The product of its (nonzero) digits is 8100000, while the sum is 49.

The spelling of 20453352153655 in words is "twenty trillion, four hundred fifty-three billion, three hundred fifty-two million, one hundred fifty-three thousand, six hundred fifty-five".