115566021521413 has 4 divisors (see below), whose sum is σ = 115567886183040. Its totient is φ = 115564156859788.

The previous prime is 115566021521411. The next prime is 115566021521417. The reversal of 115566021521413 is 314125120665511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 115566021521413 - 2¹ = 115566021521411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115566021521413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115566021521411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 932237845 + ... + 932361802.

It is an arithmetic number, because the mean of its divisors is an integer number (28891971545760).

Almost surely, 2^{115566021521413} is an apocalyptic number.

It is an amenable number.

115566021521413 is a deficient number, since it is larger than the sum of its proper divisors (1864661627).

115566021521413 is an equidigital number, since it uses as much as digits as its factorization.

115566021521413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864661626.

The product of its (nonzero) digits is 216000, while the sum is 43.

The spelling of 115566021521413 in words is "one hundred fifteen trillion, five hundred sixty-six billion, twenty-one million, five hundred twenty-one thousand, four hundred thirteen".