20001532235 has 4 divisors (see below), whose sum is σ = 24001838688. Its totient is φ = 16001225784.

The previous prime is 20001532219. The next prime is 20001532247. The reversal of 20001532235 is 53223510002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20001532235 - 2⁴ = 20001532219 is a prime.

It is a super-2 number, since 2×20001532235² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20001532235.

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, 2000153219 + ... + 2000153228.

It is an arithmetic number, because the mean of its divisors is an integer number (6000459672).

Almost surely, 2^20001532235 is an apocalyptic number.

20001532235 is a deficient number, since it is larger than the sum of its proper divisors (4000306453).

20001532235 is an equidigital number, since it uses as much as digits as its factorization.

20001532235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4000306452.

The product of its (nonzero) digits is 1800, while the sum is 23.

The spelling of 20001532235 in words is "twenty billion, one million, five hundred thirty-two thousand, two hundred thirty-five".