386522505655321 has 6 divisors (see below), whose sum is σ = 449628220864410. Its totient is φ = 331305004847376.

The previous prime is 386522505655313. The next prime is 386522505655331. The reversal of 386522505655321 is 123556505225683.

It can be written as a sum of positive squares in only one way, i.e., 337373137998400 + 49149367656921 = 18367720^2 + 7010661^2 .

It is not a de Polignac number, because 386522505655321 - 2³ = 386522505655313 is a prime.

It is a super-2 number, since 2×386522505655321² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (386522505655331) 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 5 ways as a sum of consecutive naturals, for example, 3944107200516 + ... + 3944107200613.

It is an arithmetic number, because the mean of its divisors is an integer number (74938036810735).

Almost surely, 2^{386522505655321} is an apocalyptic number.

It is an amenable number.

386522505655321 is a deficient number, since it is larger than the sum of its proper divisors (63105715209089).

386522505655321 is an equidigital number, since it uses as much as digits as its factorization.

386522505655321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7888214401143 (or 7888214401136 counting only the distinct ones).

The product of its (nonzero) digits is 64800000, while the sum is 58.

The spelling of 386522505655321 in words is "three hundred eighty-six trillion, five hundred twenty-two billion, five hundred five million, six hundred fifty-five thousand, three hundred twenty-one".