626106012641261 has 4 divisors (see below), whose sum is σ = 627064827362652. Its totient is φ = 625147197919872.

The previous prime is 626106012641189. The next prime is 626106012641293. The reversal of 626106012641261 is 162146210601626.

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 392352308173225 + 233753704468036 = 19807885^2 + 15289006^2 .

It is a cyclic number.

It is not a de Polignac number, because 626106012641261 - 2⁴² = 621707966130157 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 (626106012641861) 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, 479407359716 + ... + 479407361021.

It is an arithmetic number, because the mean of its divisors is an integer number (156766206840663).

Almost surely, 2^{626106012641261} is an apocalyptic number.

It is an amenable number.

626106012641261 is a deficient number, since it is larger than the sum of its proper divisors (958814721391).

626106012641261 is an equidigital number, since it uses as much as digits as its factorization.

626106012641261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958814721390.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 626106012641261 in words is "six hundred twenty-six trillion, one hundred six billion, twelve million, six hundred forty-one thousand, two hundred sixty-one".