20013653426699 has 4 divisors (see below), whose sum is σ = 20703779406960. Its totient is φ = 19323527446440.

The previous prime is 20013653426647. The next prime is 20013653426731. The reversal of 20013653426699 is 99662435631002.

It is a happy number.

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 20013653426699 - 2⁸ = 20013653426443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20013653426999) 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, 345062990087 + ... + 345062990144.

It is an arithmetic number, because the mean of its divisors is an integer number (5175944851740).

Almost surely, 2^{20013653426699} is an apocalyptic number.

20013653426699 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

20013653426699 is a deficient number, since it is larger than the sum of its proper divisors (690125980261).

20013653426699 is an equidigital number, since it uses as much as digits as its factorization.

20013653426699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690125980260.

The product of its (nonzero) digits is 12597120, while the sum is 56.

The spelling of 20013653426699 in words is "twenty trillion, thirteen billion, six hundred fifty-three million, four hundred twenty-six thousand, six hundred ninety-nine".