19669777124 has 12 divisors (see below), whose sum is σ = 34434086400. Its totient is φ = 9831466728.

The previous prime is 19669777069. The next prime is 19669777177. The reversal of 19669777124 is 42177796691.

It is a super-2 number, since 2×19669777124² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 842504 + ... + 865535.

It is an arithmetic number, because the mean of its divisors is an integer number (2869507200).

Almost surely, 2^19669777124 is an apocalyptic number.

It is an amenable number.

19669777124 is a deficient number, since it is larger than the sum of its proper divisors (14764309276).

19669777124 is a wasteful number, since it uses less digits than its factorization.

19669777124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710922 (or 1710920 counting only the distinct ones).

The product of its digits is 8001504, while the sum is 59.

The spelling of 19669777124 in words is "nineteen billion, six hundred sixty-nine million, seven hundred seventy-seven thousand, one hundred twenty-four".