20115052403 has 4 divisors (see below), whose sum is σ = 20154571680. Its totient is φ = 20075533128.

The previous prime is 20115052393. The next prime is 20115052469. The reversal of 20115052403 is 30425051102.

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 20115052403 - 2²² = 20110858099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20115052483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19758875 + ... + 19759892.

It is an arithmetic number, because the mean of its divisors is an integer number (5038642920).

Almost surely, 2^20115052403 is an apocalyptic number.

20115052403 is a deficient number, since it is larger than the sum of its proper divisors (39519277).

20115052403 is an equidigital number, since it uses as much as digits as its factorization.

20115052403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39519276.

The product of its (nonzero) digits is 1200, while the sum is 23.

The spelling of 20115052403 in words is "twenty billion, one hundred fifteen million, fifty-two thousand, four hundred three".