19677408813969 has 16 divisors (see below), whose sum is σ = 26946516473280. Its totient is φ = 12763309890240.

The previous prime is 19677408813967. The next prime is 19677408814009. The reversal of 19677408813969 is 96931880477691.

It is not a de Polignac number, because 19677408813969 - 2¹ = 19677408813967 is a prime.

It is a super-2 number, since 2×19677408813969² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19677408813894 and 19677408813903.

It is not an unprimeable number, because it can be changed into a prime (19677408813967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 569742 + ... + 6299160.

It is an arithmetic number, because the mean of its divisors is an integer number (1684157279580).

Almost surely, 2^{19677408813969} is an apocalyptic number.

It is an amenable number.

19677408813969 is a deficient number, since it is larger than the sum of its proper divisors (7269107659311).

19677408813969 is a wasteful number, since it uses less digits than its factorization.

19677408813969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5760400.

The product of its (nonzero) digits is 987614208, while the sum is 78.

The spelling of 19677408813969 in words is "nineteen trillion, six hundred seventy-seven billion, four hundred eight million, eight hundred thirteen thousand, nine hundred sixty-nine".