19428217877 has 8 divisors (see below), whose sum is σ = 20496312000. Its totient is φ = 18364679424.

The previous prime is 19428217873. The next prime is 19428217889. The reversal of 19428217877 is 77871282491.

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 19428217877 - 2² = 19428217873 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19428217873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1130153 + ... + 1147214.

It is an arithmetic number, because the mean of its divisors is an integer number (2562039000).

Almost surely, 2^19428217877 is an apocalyptic number.

It is an amenable number.

19428217877 is a deficient number, since it is larger than the sum of its proper divisors (1068094123).

19428217877 is a wasteful number, since it uses less digits than its factorization.

19428217877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277835.

The product of its digits is 3161088, while the sum is 56.

The spelling of 19428217877 in words is "nineteen billion, four hundred twenty-eight million, two hundred seventeen thousand, eight hundred seventy-seven".