20696375263 has 4 divisors (see below), whose sum is σ = 21913809120. Its totient is φ = 19478941408.

The previous prime is 20696375237. The next prime is 20696375303. The reversal of 20696375263 is 36257369602.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20696375263 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20696375213) 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, 608716903 + ... + 608716936.

It is an arithmetic number, because the mean of its divisors is an integer number (5478452280).

Almost surely, 2^20696375263 is an apocalyptic number.

20696375263 is a deficient number, since it is larger than the sum of its proper divisors (1217433857).

20696375263 is a wasteful number, since it uses less digits than its factorization.

20696375263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217433856.

The product of its (nonzero) digits is 2449440, while the sum is 49.

The spelling of 20696375263 in words is "twenty billion, six hundred ninety-six million, three hundred seventy-five thousand, two hundred sixty-three".