20331613629 has 16 divisors (see below), whose sum is σ = 30124814400. Its totient is φ = 13552651728.

The previous prime is 20331613597. The next prime is 20331613637. The reversal of 20331613629 is 92631613302.

It is a happy number.

20331613629 is a `hidden beast` number, since 2 + 0 + 3 + 3 + 16 + 13 + 629 = 666.

It is not a de Polignac number, because 20331613629 - 2⁵ = 20331613597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20331613593 and 20331613602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331613699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183367 + ... + 272555.

It is an arithmetic number, because the mean of its divisors is an integer number (1882800900).

Almost surely, 2^20331613629 is an apocalyptic number.

It is an amenable number.

20331613629 is a deficient number, since it is larger than the sum of its proper divisors (9793200771).

20331613629 is an equidigital number, since it uses as much as digits as its factorization.

20331613629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97641 (or 97635 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The spelling of 20331613629 in words is "twenty billion, three hundred thirty-one million, six hundred thirteen thousand, six hundred twenty-nine".