20202453555 has 8 divisors (see below), whose sum is σ = 32323925712. Its totient is φ = 10774641888.

The previous prime is 20202453527. The next prime is 20202453559. The reversal of 20202453555 is 55535420202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20202453555 - 2¹⁵ = 20202420787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20202453559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 673415104 + ... + 673415133.

It is an arithmetic number, because the mean of its divisors is an integer number (4040490714).

Almost surely, 2^20202453555 is an apocalyptic number.

20202453555 is a deficient number, since it is larger than the sum of its proper divisors (12121472157).

20202453555 is a wasteful number, since it uses less digits than its factorization.

20202453555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346830245.

The product of its (nonzero) digits is 60000, while the sum is 33.

Adding to 20202453555 its reverse (55535420202), we get a palindrome (75737873757).

The spelling of 20202453555 in words is "twenty billion, two hundred two million, four hundred fifty-three thousand, five hundred fifty-five".