68272852457 has 2 divisors, whose sum is σ = 68272852458. Its totient is φ = 68272852456.

The previous prime is 68272852433. The next prime is 68272852471. The reversal of 68272852457 is 75425827286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51001898896 + 17270953561 = 225836^2 + 131419^2 .

It is a cyclic number.

It is not a de Polignac number, because 68272852457 - 2³⁰ = 67199110633 is a prime.

It is a super-2 number, since 2×68272852457² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68272852477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34136426228 + 34136426229.

It is an arithmetic number, because the mean of its divisors is an integer number (34136426229).

Almost surely, 2^68272852457 is an apocalyptic number.

It is an amenable number.

68272852457 is a deficient number, since it is larger than the sum of its proper divisors (1).

68272852457 is an equidigital number, since it uses as much as digits as its factorization.

68272852457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15052800, while the sum is 56.

The spelling of 68272852457 in words is "sixty-eight billion, two hundred seventy-two million, eight hundred fifty-two thousand, four hundred fifty-seven".