20685458602 has 8 divisors (see below), whose sum is σ = 31218545376. Its totient is φ = 10279276812.

The previous prime is 20685458597. The next prime is 20685458603.

20685458602 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20685458603) 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, 31725838 + ... + 31726489.

It is an arithmetic number, because the mean of its divisors is an integer number (3902318172).

Almost surely, 2^20685458602 is an apocalyptic number.

20685458602 is a deficient number, since it is larger than the sum of its proper divisors (10533086774).

20685458602 is a wasteful number, since it uses less digits than its factorization.

20685458602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63452492.

The product of its (nonzero) digits is 921600, while the sum is 46.

The spelling of 20685458602 in words is "twenty billion, six hundred eighty-five million, four hundred fifty-eight thousand, six hundred two".