20352135611456 has 28 divisors (see below), whose sum is σ = 44057748114960. Its totient is φ = 9250970732160.

The previous prime is 20352135611417. The next prime is 20352135611519. The reversal of 20352135611456 is 65411653125302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14454641066 + ... + 14454642473.

Almost surely, 2^{20352135611456} is an apocalyptic number.

It is an amenable number.

20352135611456 is an abundant number, since it is smaller than the sum of its proper divisors (23705612503504).

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

20352135611456 is a wasteful number, since it uses less digits than its factorization.

20352135611456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28909283562 (or 28909283552 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 44.

Adding to 20352135611456 its reverse (65411653125302), we get a palindrome (85763788736758).

The spelling of 20352135611456 in words is "twenty trillion, three hundred fifty-two billion, one hundred thirty-five million, six hundred eleven thousand, four hundred fifty-six".