13771945605 has 32 divisors (see below), whose sum is σ = 24064727040. Its totient is φ = 6669967680.

The previous prime is 13771945571. The next prime is 13771945669. The reversal of 13771945605 is 50654917731.

It is not a de Polignac number, because 13771945605 - 2¹⁴ = 13771929221 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 106224 + ... + 197046.

It is an arithmetic number, because the mean of its divisors is an integer number (752022720).

Almost surely, 2^13771945605 is an apocalyptic number.

13771945605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13771945605 is a deficient number, since it is larger than the sum of its proper divisors (10292781435).

13771945605 is a wasteful number, since it uses less digits than its factorization.

13771945605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91761.

The product of its (nonzero) digits is 793800, while the sum is 48.

The spelling of 13771945605 in words is "thirteen billion, seven hundred seventy-one million, nine hundred forty-five thousand, six hundred five".