14456771991 has 12 divisors (see below), whose sum is σ = 21602073480. Its totient is φ = 9305508240.

The previous prime is 14456771983. The next prime is 14456771993. The reversal of 14456771991 is 19917765441.

It is a happy number.

14456771991 is a `hidden beast` number, since 1 + 4 + 4 + 567 + 71 + 9 + 9 + 1 = 666.

It is not a de Polignac number, because 14456771991 - 2³ = 14456771983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14456771993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27694705 + ... + 27695226.

It is an arithmetic number, because the mean of its divisors is an integer number (1800172790).

Almost surely, 2^14456771991 is an apocalyptic number.

14456771991 is a deficient number, since it is larger than the sum of its proper divisors (7145301489).

14456771991 is a wasteful number, since it uses less digits than its factorization.

14456771991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55389966 (or 55389963 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 54.

The spelling of 14456771991 in words is "fourteen billion, four hundred fifty-six million, seven hundred seventy-one thousand, nine hundred ninety-one".