19477754707 has 4 divisors (see below), whose sum is σ = 19479376936. Its totient is φ = 19476132480.

The previous prime is 19477754689. The next prime is 19477754717. The reversal of 19477754707 is 70745777491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19477754707 - 2³¹ = 17330271059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19477754717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 792969 + ... + 817162.

It is an arithmetic number, because the mean of its divisors is an integer number (4869844234).

Almost surely, 2^19477754707 is an apocalyptic number.

19477754707 is a deficient number, since it is larger than the sum of its proper divisors (1622229).

19477754707 is a wasteful number, since it uses less digits than its factorization.

19477754707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1622228.

The product of its (nonzero) digits is 12101040, while the sum is 58.

The spelling of 19477754707 in words is "nineteen billion, four hundred seventy-seven million, seven hundred fifty-four thousand, seven hundred seven".