13400001555 has 8 divisors (see below), whose sum is σ = 21440002512. Its totient is φ = 7146667488.

The previous prime is 13400001523. The next prime is 13400001557. The reversal of 13400001555 is 55510000431.

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

It is not a de Polignac number, because 13400001555 - 2⁵ = 13400001523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13400001557) 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, 446666704 + ... + 446666733.

It is an arithmetic number, because the mean of its divisors is an integer number (2680000314).

Almost surely, 2^13400001555 is an apocalyptic number.

13400001555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13400001555 is a deficient number, since it is larger than the sum of its proper divisors (8040000957).

13400001555 is an equidigital number, since it uses as much as digits as its factorization.

13400001555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893333445.

The product of its (nonzero) digits is 1500, while the sum is 24.

Adding to 13400001555 its reverse (55510000431), we get a palindrome (68910001986).

The spelling of 13400001555 in words is "thirteen billion, four hundred million, one thousand, five hundred fifty-five".