16726225261 has 2 divisors, whose sum is σ = 16726225262. Its totient is φ = 16726225260.

The previous prime is 16726225199. The next prime is 16726225283. The reversal of 16726225261 is 16252262761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16623202761 + 103022500 = 128931^2 + 10150^2 .

It is a cyclic number.

It is not a de Polignac number, because 16726225261 - 2¹³ = 16726217069 is a prime.

It is a super-2 number, since 2×16726225261² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16726265261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8363112630 + 8363112631.

It is an arithmetic number, because the mean of its divisors is an integer number (8363112631).

Almost surely, 2^16726225261 is an apocalyptic number.

It is an amenable number.

16726225261 is a deficient number, since it is larger than the sum of its proper divisors (1).

16726225261 is an equidigital number, since it uses as much as digits as its factorization.

16726225261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 40.

The spelling of 16726225261 in words is "sixteen billion, seven hundred twenty-six million, two hundred twenty-five thousand, two hundred sixty-one".