19428885377 has 16 divisors (see below), whose sum is σ = 21395428992. Its totient is φ = 17496453120.

The previous prime is 19428885317. The next prime is 19428885389. The reversal of 19428885377 is 77358882491.

It is a cyclic number.

It is not a de Polignac number, because 19428885377 - 2⁶ = 19428885313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19428885317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 520193 + ... + 556289.

It is an arithmetic number, because the mean of its divisors is an integer number (1337214312).

Almost surely, 2^19428885377 is an apocalyptic number.

It is an amenable number.

19428885377 is a deficient number, since it is larger than the sum of its proper divisors (1966543615).

19428885377 is a wasteful number, since it uses less digits than its factorization.

19428885377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36568.

The product of its digits is 27095040, while the sum is 62.

The spelling of 19428885377 in words is "nineteen billion, four hundred twenty-eight million, eight hundred eighty-five thousand, three hundred seventy-seven".