19656824934 has 16 divisors (see below), whose sum is σ = 39554839872. Its totient is φ = 6512076648.

The previous prime is 19656824861. The next prime is 19656824947. The reversal of 19656824934 is 43942865691.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10048524 + ... + 10050479.

It is an arithmetic number, because the mean of its divisors is an integer number (2472177492).

Almost surely, 2^19656824934 is an apocalyptic number.

19656824934 is an abundant number, since it is smaller than the sum of its proper divisors (19898014938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19656824934 is a wasteful number, since it uses less digits than its factorization.

19656824934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20099171.

The product of its digits is 11197440, while the sum is 57.

The spelling of 19656824934 in words is "nineteen billion, six hundred fifty-six million, eight hundred twenty-four thousand, nine hundred thirty-four".