1626230326261 has 4 divisors (see below), whose sum is σ = 1648507454092. Its totient is φ = 1603953198432.

The previous prime is 1626230326187. The next prime is 1626230326291.

1626230326261 is nontrivially palindromic in base 10.

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 854940636900 + 771289689361 = 924630^2 + 878231^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1626230326261 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 (1626230326291) 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, 11138563806 + ... + 11138563951.

It is an arithmetic number, because the mean of its divisors is an integer number (412126863523).

Almost surely, 2^{1626230326261} is an apocalyptic number.

It is an amenable number.

1626230326261 is a deficient number, since it is larger than the sum of its proper divisors (22277127831).

1626230326261 is an equidigital number, since it uses as much as digits as its factorization.

1626230326261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22277127830.

The product of its (nonzero) digits is 186624, while the sum is 40.

The spelling of 1626230326261 in words is "one trillion, six hundred twenty-six billion, two hundred thirty million, three hundred twenty-six thousand, two hundred sixty-one".