20253155455202 has 4 divisors (see below), whose sum is σ = 30379733182806. Its totient is φ = 10126577727600.

The previous prime is 20253155455189. The next prime is 20253155455223. The reversal of 20253155455202 is 20255455135202.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 11370377256001 + 8882778199201 = 3371999^2 + 2980399^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20253155455202.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5063288863799 + ... + 5063288863802.

Almost surely, 2^{20253155455202} is an apocalyptic number.

20253155455202 is a deficient number, since it is larger than the sum of its proper divisors (10126577727604).

20253155455202 is a wasteful number, since it uses less digits than its factorization.

20253155455202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10126577727603.

The product of its (nonzero) digits is 600000, while the sum is 41.

The spelling of 20253155455202 in words is "twenty trillion, two hundred fifty-three billion, one hundred fifty-five million, four hundred fifty-five thousand, two hundred two".