20135635163264 has 16 divisors (see below), whose sum is σ = 40113960677070. Its totient is φ = 10067817581568.

The previous prime is 20135635163209. The next prime is 20135635163297. The reversal of 20135635163264 is 46236153653102.

It can be written as a sum of positive squares in only one way, i.e., 19385000065600 + 750635097664 = 4402840^2 + 866392^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78654824729 + ... + 78654824984.

Almost surely, 2^{20135635163264} is an apocalyptic number.

It is an amenable number.

20135635163264 is a deficient number, since it is larger than the sum of its proper divisors (19978325513806).

20135635163264 is an equidigital number, since it uses as much as digits as its factorization.

20135635163264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157309649727 (or 157309649715 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 47.

The spelling of 20135635163264 in words is "twenty trillion, one hundred thirty-five billion, six hundred thirty-five million, one hundred sixty-three thousand, two hundred sixty-four".