212626051457 has 2 divisors, whose sum is σ = 212626051458. Its totient is φ = 212626051456.

The previous prime is 212626051439. The next prime is 212626051511. The reversal of 212626051457 is 754150626212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173552227216 + 39073824241 = 416596^2 + 197671^2 .

It is a cyclic number.

It is not a de Polignac number, because 212626051457 - 2³² = 208331084161 is a prime.

It is not a weakly prime, because it can be changed into another prime (212626251457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106313025728 + 106313025729.

It is an arithmetic number, because the mean of its divisors is an integer number (106313025729).

Almost surely, 2^212626051457 is an apocalyptic number.

It is an amenable number.

212626051457 is a deficient number, since it is larger than the sum of its proper divisors (1).

212626051457 is an equidigital number, since it uses as much as digits as its factorization.

212626051457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 41.

Adding to 212626051457 its reverse (754150626212), we get a palindrome (966776677669).

The spelling of 212626051457 in words is "two hundred twelve billion, six hundred twenty-six million, fifty-one thousand, four hundred fifty-seven".