13785497655 has 16 divisors (see below), whose sum is σ = 22058298240. Its totient is φ = 7351764768.

The previous prime is 13785497651. The next prime is 13785497729. The reversal of 13785497655 is 55679458731.

It is not a de Polignac number, because 13785497655 - 2² = 13785497651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13785497651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333564 + ... + 372606.

It is an arithmetic number, because the mean of its divisors is an integer number (1378643640).

Almost surely, 2^13785497655 is an apocalyptic number.

13785497655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13785497655 is a deficient number, since it is larger than the sum of its proper divisors (8272800585).

13785497655 is a wasteful number, since it uses less digits than its factorization.

13785497655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62590.

The product of its digits is 31752000, while the sum is 60.

The spelling of 13785497655 in words is "thirteen billion, seven hundred eighty-five million, four hundred ninety-seven thousand, six hundred fifty-five".