20876254403 has 4 divisors (see below), whose sum is σ = 21028635960. Its totient is φ = 20723872848.

The previous prime is 20876254397. The next prime is 20876254423. The reversal of 20876254403 is 30445267802.

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

It is a cyclic number.

It is not a de Polignac number, because 20876254403 - 2²⁸ = 20607818947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20876254423) 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 3 ways as a sum of consecutive naturals, for example, 76190573 + ... + 76190846.

It is an arithmetic number, because the mean of its divisors is an integer number (5257158990).

Almost surely, 2^20876254403 is an apocalyptic number.

20876254403 is a deficient number, since it is larger than the sum of its proper divisors (152381557).

20876254403 is a wasteful number, since it uses less digits than its factorization.

20876254403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152381556.

The product of its (nonzero) digits is 322560, while the sum is 41.

The spelling of 20876254403 in words is "twenty billion, eight hundred seventy-six million, two hundred fifty-four thousand, four hundred three".