20500153424 has 20 divisors (see below), whose sum is σ = 39742897140. Its totient is φ = 10243921920.

The previous prime is 20500153411. The next prime is 20500153439. The reversal of 20500153424 is 42435100502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6167275024 + 14332878400 = 78532^2 + 119720^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20500153393 and 20500153402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357137 + ... + 410544.

It is an arithmetic number, because the mean of its divisors is an integer number (1987144857).

Almost surely, 2^20500153424 is an apocalyptic number.

It is an amenable number.

20500153424 is a deficient number, since it is larger than the sum of its proper divisors (19242743716).

20500153424 is a wasteful number, since it uses less digits than its factorization.

20500153424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769358 (or 769352 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 20500153424 its reverse (42435100502), we get a palindrome (62935253926).

The spelling of 20500153424 in words is "twenty billion, five hundred million, one hundred fifty-three thousand, four hundred twenty-four".