19468709477 has 16 divisors (see below), whose sum is σ = 22343849472. Its totient is φ = 16617175920.

The previous prime is 19468709443. The next prime is 19468709479. The reversal of 19468709477 is 77490786491.

It is a cyclic number.

It is not a de Polignac number, because 19468709477 - 2⁶ = 19468709413 is a prime.

It is a super-2 number, since 2×19468709477² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19468709479) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1964978 + ... + 1974860.

It is an arithmetic number, because the mean of its divisors is an integer number (1396490592).

Almost surely, 2^19468709477 is an apocalyptic number.

It is an amenable number.

19468709477 is a deficient number, since it is larger than the sum of its proper divisors (2875139995).

19468709477 is an equidigital number, since it uses as much as digits as its factorization.

19468709477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11048.

The product of its (nonzero) digits is 21337344, while the sum is 62.

The spelling of 19468709477 in words is "nineteen billion, four hundred sixty-eight million, seven hundred nine thousand, four hundred seventy-seven".