426572697697 has 2 divisors, whose sum is σ = 426572697698. Its totient is φ = 426572697696.

The previous prime is 426572697613. The next prime is 426572697737. The reversal of 426572697697 is 796796275624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 265385704336 + 161186993361 = 515156^2 + 401481^2 .

It is a cyclic number.

It is not a de Polignac number, because 426572697697 - 2¹⁹ = 426572173409 is a prime.

It is a super-2 number, since 2×426572697697² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (426572697797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213286348848 + 213286348849.

It is an arithmetic number, because the mean of its divisors is an integer number (213286348849).

Almost surely, 2^426572697697 is an apocalyptic number.

It is an amenable number.

426572697697 is a deficient number, since it is larger than the sum of its proper divisors (1).

426572697697 is an equidigital number, since it uses as much as digits as its factorization.

426572697697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480090240, while the sum is 70.

The spelling of 426572697697 in words is "four hundred twenty-six billion, five hundred seventy-two million, six hundred ninety-seven thousand, six hundred ninety-seven".