20351655551153 has 4 divisors (see below), whose sum is σ = 20596856220528. Its totient is φ = 20106454881780.

The previous prime is 20351655551137. The next prime is 20351655551167. The reversal of 20351655551153 is 35115555615302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20351655551153 - 2⁴ = 20351655551137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20351655551098 and 20351655551107.

It is not an unprimeable number, because it can be changed into a prime (20351655557153) by changing a digit.

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, 122600334563 + ... + 122600334728.

It is an arithmetic number, because the mean of its divisors is an integer number (5149214055132).

Almost surely, 2^{20351655551153} is an apocalyptic number.

It is an amenable number.

20351655551153 is a deficient number, since it is larger than the sum of its proper divisors (245200669375).

20351655551153 is an equidigital number, since it uses as much as digits as its factorization.

20351655551153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245200669374.

The product of its (nonzero) digits is 1687500, while the sum is 47.

The spelling of 20351655551153 in words is "twenty trillion, three hundred fifty-one billion, six hundred fifty-five million, five hundred fifty-one thousand, one hundred fifty-three".