13754431647 has 24 divisors (see below), whose sum is σ = 21707457408. Its totient is φ = 8323016400.

The previous prime is 13754431637. The next prime is 13754431651. The reversal of 13754431647 is 74613445731.

13754431647 is a `hidden beast` number, since 1 + 37 + 544 + 31 + 6 + 47 = 666.

It is not a de Polignac number, because 13754431647 - 2⁸ = 13754431391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13754431637) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44379 + ... + 171692.

It is an arithmetic number, because the mean of its divisors is an integer number (904477392).

Almost surely, 2^13754431647 is an apocalyptic number.

13754431647 is a deficient number, since it is larger than the sum of its proper divisors (7953025761).

13754431647 is a wasteful number, since it uses less digits than its factorization.

13754431647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216731 (or 216728 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The spelling of 13754431647 in words is "thirteen billion, seven hundred fifty-four million, four hundred thirty-one thousand, six hundred forty-seven".