20629857093 has 8 divisors (see below), whose sum is σ = 27650489856. Its totient is φ = 13681231200.

The previous prime is 20629857089. The next prime is 20629857113. The reversal of 20629857093 is 39075892602.

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

It is not a de Polignac number, because 20629857093 - 2² = 20629857089 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20629857593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18001048 + ... + 18002193.

It is an arithmetic number, because the mean of its divisors is an integer number (3456311232).

Almost surely, 2^20629857093 is an apocalyptic number.

It is an amenable number.

20629857093 is a deficient number, since it is larger than the sum of its proper divisors (7020632763).

20629857093 is a wasteful number, since it uses less digits than its factorization.

20629857093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36003435.

The product of its (nonzero) digits is 1632960, while the sum is 51.

The spelling of 20629857093 in words is "twenty billion, six hundred twenty-nine million, eight hundred fifty-seven thousand, ninety-three".