13220930857535 has 16 divisors (see below), whose sum is σ = 16133783413440. Its totient is φ = 10397818333440.

The previous prime is 13220930857531. The next prime is 13220930857571. The reversal of 13220930857535 is 53575803902231.

13220930857535 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13220930857535 - 2² = 13220930857531 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220930857531) 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, 10961582 + ... + 12107771.

It is an arithmetic number, because the mean of its divisors is an integer number (1008361463340).

Almost surely, 2^{13220930857535} is an apocalyptic number.

13220930857535 is a deficient number, since it is larger than the sum of its proper divisors (2912852555905).

13220930857535 is a wasteful number, since it uses less digits than its factorization.

13220930857535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23071298.

The product of its (nonzero) digits is 6804000, while the sum is 53.

The spelling of 13220930857535 in words is "thirteen trillion, two hundred twenty billion, nine hundred thirty million, eight hundred fifty-seven thousand, five hundred thirty-five".