19401456005385 has 16 divisors (see below), whose sum is σ = 31123380086784. Its totient is φ = 10320426376832.

The previous prime is 19401456005359. The next prime is 19401456005431. The reversal of 19401456005385 is 58350065410491.

It is a cyclic number.

It is not a de Polignac number, because 19401456005385 - 2⁷ = 19401456005257 is a prime.

It is a super-2 number, since 2×19401456005385² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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, 1688545692 + ... + 1688557181.

It is an arithmetic number, because the mean of its divisors is an integer number (1945211255424).

Almost surely, 2^{19401456005385} is an apocalyptic number.

19401456005385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19401456005385 is a deficient number, since it is larger than the sum of its proper divisors (11721924081399).

19401456005385 is a wasteful number, since it uses less digits than its factorization.

19401456005385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3377103264.

The product of its (nonzero) digits is 2592000, while the sum is 51.

The spelling of 19401456005385 in words is "nineteen trillion, four hundred one billion, four hundred fifty-six million, five thousand, three hundred eighty-five".