13945523947 has 8 divisors (see below), whose sum is σ = 13980589056. Its totient is φ = 13910498472.

The previous prime is 13945523939. The next prime is 13945523951. The reversal of 13945523947 is 74932554931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13945523947 - 2³ = 13945523939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13945523894 and 13945523903.

It is not an unprimeable number, because it can be changed into a prime (13945524947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 769998 + ... + 787900.

It is an arithmetic number, because the mean of its divisors is an integer number (1747573632).

Almost surely, 2^13945523947 is an apocalyptic number.

13945523947 is a deficient number, since it is larger than the sum of its proper divisors (35065109).

13945523947 is a wasteful number, since it uses less digits than its factorization.

13945523947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19817.

The product of its digits is 4082400, while the sum is 52.

The spelling of 13945523947 in words is "thirteen billion, nine hundred forty-five million, five hundred twenty-three thousand, nine hundred forty-seven".