252606021739 has 2 divisors, whose sum is σ = 252606021740. Its totient is φ = 252606021738.

The previous prime is 252606021719. The next prime is 252606021779. The reversal of 252606021739 is 937120606252.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252606021739 is a prime.

It is a super-3 number, since 3×252606021739³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 252606021695 and 252606021704.

It is not a weakly prime, because it can be changed into another prime (252606021719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126303010869 + 126303010870.

It is an arithmetic number, because the mean of its divisors is an integer number (126303010870).

Almost surely, 2^252606021739 is an apocalyptic number.

252606021739 is a deficient number, since it is larger than the sum of its proper divisors (1).

252606021739 is an equidigital number, since it uses as much as digits as its factorization.

252606021739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 252606021739 in words is "two hundred fifty-two billion, six hundred six million, twenty-one thousand, seven hundred thirty-nine".