13036505720451 has 4 divisors (see below), whose sum is σ = 17382007627272. Its totient is φ = 8691003813632.

The previous prime is 13036505720449. The next prime is 13036505720453. The reversal of 13036505720451 is 15402750563031.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (13036505720449) and next prime (13036505720453).

It is a cyclic number.

It is not a de Polignac number, because 13036505720451 - 2¹ = 13036505720449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13036505720453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2172750953406 + ... + 2172750953411.

It is an arithmetic number, because the mean of its divisors is an integer number (4345501906818).

Almost surely, 2^{13036505720451} is an apocalyptic number.

13036505720451 is a deficient number, since it is larger than the sum of its proper divisors (4345501906821).

13036505720451 is an equidigital number, since it uses as much as digits as its factorization.

13036505720451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4345501906820.

The product of its (nonzero) digits is 378000, while the sum is 42.

The spelling of 13036505720451 in words is "thirteen trillion, thirty-six billion, five hundred five million, seven hundred twenty thousand, four hundred fifty-one".