20354461636553 has 8 divisors (see below), whose sum is σ = 22921153280256. Its totient is φ = 17907150999600.

The previous prime is 20354461636451. The next prime is 20354461636571. The reversal of 20354461636553 is 35563616445302.

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

It is a cyclic number.

It is not a de Polignac number, because 20354461636553 - 2⁸ = 20354461636297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20354461636495 and 20354461636504.

It is not an unprimeable number, because it can be changed into a prime (20354461636753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29845251326 + ... + 29845252007.

It is an arithmetic number, because the mean of its divisors is an integer number (2865144160032).

Almost surely, 2^{20354461636553} is an apocalyptic number.

It is an amenable number.

20354461636553 is a deficient number, since it is larger than the sum of its proper divisors (2566691643703).

20354461636553 is a wasteful number, since it uses less digits than its factorization.

20354461636553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59690503375.

The product of its (nonzero) digits is 23328000, while the sum is 53.

The spelling of 20354461636553 in words is "twenty trillion, three hundred fifty-four billion, four hundred sixty-one million, six hundred thirty-six thousand, five hundred fifty-three".