20696286897 has 48 divisors (see below), whose sum is σ = 37186950528. Its totient is φ = 10897251840.

The previous prime is 20696286833. The next prime is 20696286899. The reversal of 20696286897 is 79868269602.

It is not a de Polignac number, because 20696286897 - 2⁶ = 20696286833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20696286899) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 451093 + ... + 494850.

It is an arithmetic number, because the mean of its divisors is an integer number (774728136).

Almost surely, 2^20696286897 is an apocalyptic number.

It is an amenable number.

20696286897 is a deficient number, since it is larger than the sum of its proper divisors (16490663631).

20696286897 is a wasteful number, since it uses less digits than its factorization.

20696286897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945990 (or 945987 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 63.

The spelling of 20696286897 in words is "twenty billion, six hundred ninety-six million, two hundred eighty-six thousand, eight hundred ninety-seven".