1626716136361 has 4 divisors (see below), whose sum is σ = 1626720342724. Its totient is φ = 1626711930000.

The previous prime is 1626716136343. The next prime is 1626716136523. The reversal of 1626716136361 is 1636316176261.

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 663501477136 + 963214659225 = 814556^2 + 981435^2 .

It is a cyclic number.

It is not a de Polignac number, because 1626716136361 - 2¹¹ = 1626716134313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1626716136061) 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, 1456890 + ... + 2318611.

It is an arithmetic number, because the mean of its divisors is an integer number (406680085681).

Almost surely, 2^{1626716136361} is an apocalyptic number.

It is an amenable number.

1626716136361 is a deficient number, since it is larger than the sum of its proper divisors (4206363).

1626716136361 is an equidigital number, since it uses as much as digits as its factorization.

1626716136361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4206362.

The product of its digits is 979776, while the sum is 49.

The spelling of 1626716136361 in words is "one trillion, six hundred twenty-six billion, seven hundred sixteen million, one hundred thirty-six thousand, three hundred sixty-one".