19629411961 has 8 divisors (see below), whose sum is σ = 20329415424. Its totient is φ = 18941173440.

The previous prime is 19629411959. The next prime is 19629411983. The reversal of 19629411961 is 16911492691.

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 19629411961 - 2¹ = 19629411959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19629711961) 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 in 7 ways as a sum of consecutive naturals, for example, 2937840 + ... + 2944513.

It is an arithmetic number, because the mean of its divisors is an integer number (2541176928).

Almost surely, 2^19629411961 is an apocalyptic number.

It is an amenable number.

19629411961 is a deficient number, since it is larger than the sum of its proper divisors (700003463).

19629411961 is an equidigital number, since it uses as much as digits as its factorization.

19629411961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5882471.

The product of its digits is 209952, while the sum is 49.

The spelling of 19629411961 in words is "nineteen billion, six hundred twenty-nine million, four hundred eleven thousand, nine hundred sixty-one".