13036357716421 has 4 divisors (see below), whose sum is σ = 14039154463852. Its totient is φ = 12033560968992.

The previous prime is 13036357716419. The next prime is 13036357716433. The reversal of 13036357716421 is 12461775363031.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1838299393921 + 11198058322500 = 1355839^2 + 3346350^2 .

It is a cyclic number.

It is not a de Polignac number, because 13036357716421 - 2¹ = 13036357716419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13036357716451) 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, 501398373696 + ... + 501398373721.

It is an arithmetic number, because the mean of its divisors is an integer number (3509788615963).

Almost surely, 2^{13036357716421} is an apocalyptic number.

It is an amenable number.

13036357716421 is a deficient number, since it is larger than the sum of its proper divisors (1002796747431).

13036357716421 is a wasteful number, since it uses less digits than its factorization.

13036357716421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002796747430.

The product of its (nonzero) digits is 1905120, while the sum is 49.

The spelling of 13036357716421 in words is "thirteen trillion, thirty-six billion, three hundred fifty-seven million, seven hundred sixteen thousand, four hundred twenty-one".