20455514503 has 12 divisors (see below), whose sum is σ = 21839923512. Its totient is φ = 19154468480.

The previous prime is 20455514479. The next prime is 20455514533. The reversal of 20455514503 is 30541555402.

It is not a de Polignac number, because 20455514503 - 2³³ = 11865579911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20455514533) 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 11 ways as a sum of consecutive naturals, for example, 122713 + ... + 236578.

It is an arithmetic number, because the mean of its divisors is an integer number (1819993626).

Almost surely, 2^20455514503 is an apocalyptic number.

20455514503 is a deficient number, since it is larger than the sum of its proper divisors (1384409009).

20455514503 is a wasteful number, since it uses less digits than its factorization.

20455514503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359522 (or 359505 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 20455514503 in words is "twenty billion, four hundred fifty-five million, five hundred fourteen thousand, five hundred three".