20473735157 has 8 divisors (see below), whose sum is σ = 20777231232. Its totient is φ = 20170659600.

The previous prime is 20473735111. The next prime is 20473735159. The reversal of 20473735157 is 75153737402.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20473735157 - 2²⁰ = 20472686581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20473735159) 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, 6353 + ... + 202454.

It is an arithmetic number, because the mean of its divisors is an integer number (2597153904).

Almost surely, 2^20473735157 is an apocalyptic number.

It is an amenable number.

20473735157 is a deficient number, since it is larger than the sum of its proper divisors (303496075).

20473735157 is a wasteful number, since it uses less digits than its factorization.

20473735157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210259.

The product of its (nonzero) digits is 617400, while the sum is 44.

The spelling of 20473735157 in words is "twenty billion, four hundred seventy-three million, seven hundred thirty-five thousand, one hundred fifty-seven".