20554645502 has 8 divisors (see below), whose sum is σ = 30842821656. Its totient is φ = 10273704952.

The previous prime is 20554645499. The next prime is 20554645541.

It is a happy number.

20554645502 is nontrivially palindromic in base 10.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1801793 + ... + 1813164.

It is an arithmetic number, because the mean of its divisors is an integer number (3855352707).

Almost surely, 2^20554645502 is an apocalyptic number.

20554645502 is a deficient number, since it is larger than the sum of its proper divisors (10288176154).

20554645502 is a wasteful number, since it uses less digits than its factorization.

20554645502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3617802.

The product of its (nonzero) digits is 240000, while the sum is 38.

The spelling of 20554645502 in words is "twenty billion, five hundred fifty-four million, six hundred forty-five thousand, five hundred two".