20638153024 has 14 divisors (see below), whose sum is σ = 40953835034. Its totient is φ = 10319076480.

The previous prime is 20638152979. The next prime is 20638153027. The reversal of 20638153024 is 42035183602.

It can be written as a sum of positive squares in only one way, i.e., 18341826624 + 2296326400 = 135432^2 + 47920^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20638153027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161235507 + ... + 161235634.

It is an arithmetic number, because the mean of its divisors is an integer number (2925273931).

Almost surely, 2^20638153024 is an apocalyptic number.

It is an amenable number.

20638153024 is a deficient number, since it is larger than the sum of its proper divisors (20315682010).

20638153024 is an equidigital number, since it uses as much as digits as its factorization.

20638153024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322471153 (or 322471143 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 20638153024 in words is "twenty billion, six hundred thirty-eight million, one hundred fifty-three thousand, twenty-four".