20102452031254 has 4 divisors (see below), whose sum is σ = 30153678046884. Its totient is φ = 10051226015626.

The previous prime is 20102452031177. The next prime is 20102452031303. The reversal of 20102452031254 is 45213025420102.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5025613007812 + ... + 5025613007815.

It is an arithmetic number, because the mean of its divisors is an integer number (7538419511721).

Almost surely, 2^{20102452031254} is an apocalyptic number.

20102452031254 is a deficient number, since it is larger than the sum of its proper divisors (10051226015630).

20102452031254 is a wasteful number, since it uses less digits than its factorization.

20102452031254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10051226015629.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 20102452031254 its reverse (45213025420102), we get a palindrome (65315477451356).

The spelling of 20102452031254 in words is "twenty trillion, one hundred two billion, four hundred fifty-two million, thirty-one thousand, two hundred fifty-four".