19695327405 has 32 divisors (see below), whose sum is σ = 34059172224. Its totient is φ = 9661130496.

The previous prime is 19695327389. The next prime is 19695327493. The reversal of 19695327405 is 50472359691.

It is not a de Polignac number, because 19695327405 - 2⁴ = 19695327389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128299 + ... + 236328.

It is an arithmetic number, because the mean of its divisors is an integer number (1064349132).

Almost surely, 2^19695327405 is an apocalyptic number.

19695327405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19695327405 is a deficient number, since it is larger than the sum of its proper divisors (14363844819).

19695327405 is a wasteful number, since it uses less digits than its factorization.

19695327405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364925.

The product of its (nonzero) digits is 2041200, while the sum is 51.

The spelling of 19695327405 in words is "nineteen billion, six hundred ninety-five million, three hundred twenty-seven thousand, four hundred five".