13520957747 has 8 divisors (see below), whose sum is σ = 14751195312. Its totient is φ = 12290896800.

The previous prime is 13520957729. The next prime is 13520957761. The reversal of 13520957747 is 74775902531.

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 13520957747 - 2²² = 13516763443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13520957695 and 13520957704.

It is not an unprimeable number, because it can be changed into a prime (13520957717) 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, 154997 + ... + 225977.

It is an arithmetic number, because the mean of its divisors is an integer number (1843899414).

Almost surely, 2^13520957747 is an apocalyptic number.

13520957747 is a deficient number, since it is larger than the sum of its proper divisors (1230237565).

13520957747 is a wasteful number, since it uses less digits than its factorization.

13520957747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88309.

The product of its (nonzero) digits is 1852200, while the sum is 50.

The spelling of 13520957747 in words is "thirteen billion, five hundred twenty million, nine hundred fifty-seven thousand, seven hundred forty-seven".