19427698455 has 128 divisors (see below), whose sum is σ = 36333204480. Its totient is φ = 8765890560.

The previous prime is 19427698361. The next prime is 19427698457. The reversal of 19427698455 is 55489672491.

Together with 16905506024 it forms a betrothed pair.

It is not a de Polignac number, because 19427698455 - 2⁷ = 19427698327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19427698457) 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 127 ways as a sum of consecutive naturals, for example, 61285957 + ... + 61286273.

It is an arithmetic number, because the mean of its divisors is an integer number (283853160).

Almost surely, 2^19427698455 is an apocalyptic number.

19427698455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19427698455 is a deficient number, since it is larger than the sum of its proper divisors (16905506025).

19427698455 is a wasteful number, since it uses less digits than its factorization.

19427698455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641.

The product of its digits is 21772800, while the sum is 60.

The spelling of 19427698455 in words is "nineteen billion, four hundred twenty-seven million, six hundred ninety-eight thousand, four hundred fifty-five".