13015400243 has 6 divisors (see below), whose sum is σ = 13826048316. Its totient is φ = 12249788192.

The previous prime is 13015400239. The next prime is 13015400269. The reversal of 13015400243 is 34200451031.

It is not a de Polignac number, because 13015400243 - 2² = 13015400239 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (13015400543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22517705 + ... + 22518282.

It is an arithmetic number, because the mean of its divisors is an integer number (2304341386).

Almost surely, 2^13015400243 is an apocalyptic number.

13015400243 is a deficient number, since it is larger than the sum of its proper divisors (810648073).

13015400243 is an equidigital number, since it uses as much as digits as its factorization.

13015400243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45036021 (or 45036004 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 13015400243 its reverse (34200451031), we get a palindrome (47215851274).

The spelling of 13015400243 in words is "thirteen billion, fifteen million, four hundred thousand, two hundred forty-three".