20614635823 has 2 divisors, whose sum is σ = 20614635824. Its totient is φ = 20614635822.

The previous prime is 20614635779. The next prime is 20614635851. The reversal of 20614635823 is 32853641602.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20614635823 is a prime.

It is a super-2 number, since 2×20614635823² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20614635883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10307317911 + 10307317912.

It is an arithmetic number, because the mean of its divisors is an integer number (10307317912).

Almost surely, 2^20614635823 is an apocalyptic number.

20614635823 is a deficient number, since it is larger than the sum of its proper divisors (1).

20614635823 is an equidigital number, since it uses as much as digits as its factorization.

20614635823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 20614635823 in words is "twenty billion, six hundred fourteen million, six hundred thirty-five thousand, eight hundred twenty-three".