20100623135 has 4 divisors (see below), whose sum is σ = 24120747768. Its totient is φ = 16080498504.

The previous prime is 20100623119. The next prime is 20100623201. The reversal of 20100623135 is 53132600102.

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 20100623135 - 2⁴ = 20100623119 is a prime.

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 20100623135.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2010062309 + ... + 2010062318.

It is an arithmetic number, because the mean of its divisors is an integer number (6030186942).

Almost surely, 2^20100623135 is an apocalyptic number.

20100623135 is a deficient number, since it is larger than the sum of its proper divisors (4020124633).

20100623135 is an equidigital number, since it uses as much as digits as its factorization.

20100623135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4020124632.

The product of its (nonzero) digits is 1080, while the sum is 23.

The spelling of 20100623135 in words is "twenty billion, one hundred million, six hundred twenty-three thousand, one hundred thirty-five".