20013223151552 has 28 divisors (see below), whose sum is σ = 41440424028816. Its totient is φ = 9571541506560.

The previous prime is 20013223151513. The next prime is 20013223151563. The reversal of 20013223151552 is 25515132231002.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6797968349 + ... + 6797971292.

Almost surely, 2^{20013223151552} is an apocalyptic number.

It is an amenable number.

20013223151552 is an abundant number, since it is smaller than the sum of its proper divisors (21427200877264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20013223151552 is a wasteful number, since it uses less digits than its factorization.

20013223151552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13595939676 (or 13595939666 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 20013223151552 its reverse (25515132231002), we get a palindrome (45528355382554).

The spelling of 20013223151552 in words is "twenty trillion, thirteen billion, two hundred twenty-three million, one hundred fifty-one thousand, five hundred fifty-two".