20115604433 has 8 divisors (see below), whose sum is σ = 21434539752. Its totient is φ = 18811742976.

The previous prime is 20115604429. The next prime is 20115604447. The reversal of 20115604433 is 33440651102.

It can be written as a sum of positive squares in 4 ways, for example, as 9058661329 + 11056943104 = 95177^2 + 105152^2 .

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 20115604433 - 2² = 20115604429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20115604396 and 20115604405.

It is not an unprimeable number, because it can be changed into a prime (20115604423) 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, 3765710 + ... + 3771047.

It is an arithmetic number, because the mean of its divisors is an integer number (2679317469).

Almost surely, 2^20115604433 is an apocalyptic number.

It is an amenable number.

20115604433 is a deficient number, since it is larger than the sum of its proper divisors (1318935319).

20115604433 is a wasteful number, since it uses less digits than its factorization.

20115604433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7536931.

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 20115604433 in words is "twenty billion, one hundred fifteen million, six hundred four thousand, four hundred thirty-three".