20019629651 has 8 divisors (see below), whose sum is σ = 23136651360. Its totient is φ = 16966876608.

The previous prime is 20019629611. The next prime is 20019629677. The reversal of 20019629651 is 15692691002.

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 20019629651 - 2¹⁰ = 20019628627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20019629599 and 20019629608.

It is not an unprimeable number, because it can be changed into a prime (20019629611) 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, 16066496 + ... + 16067741.

It is an arithmetic number, because the mean of its divisors is an integer number (2892081420).

Almost surely, 2^20019629651 is an apocalyptic number.

20019629651 is a deficient number, since it is larger than the sum of its proper divisors (3117021709).

20019629651 is an equidigital number, since it uses as much as digits as its factorization.

20019629651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32134333.

The product of its (nonzero) digits is 58320, while the sum is 41.

The spelling of 20019629651 in words is "twenty billion, nineteen million, six hundred twenty-nine thousand, six hundred fifty-one".