13455657578 has 16 divisors (see below), whose sum is σ = 22093507296. Its totient is φ = 6095330640.

The previous prime is 13455657559. The next prime is 13455657599. The reversal of 13455657578 is 87575655431.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1037276 + ... + 1050167.

It is an arithmetic number, because the mean of its divisors is an integer number (1380844206).

Almost surely, 2^13455657578 is an apocalyptic number.

13455657578 is a deficient number, since it is larger than the sum of its proper divisors (8637849718).

13455657578 is a wasteful number, since it uses less digits than its factorization.

13455657578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087749.

The product of its digits is 17640000, while the sum is 56.

The spelling of 13455657578 in words is "thirteen billion, four hundred fifty-five million, six hundred fifty-seven thousand, five hundred seventy-eight".