40228652641 has 2 divisors, whose sum is σ = 40228652642. Its totient is φ = 40228652640.

The previous prime is 40228652549. The next prime is 40228652683. The reversal of 40228652641 is 14625682204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32877305041 + 7351347600 = 181321^2 + 85740^2 .

It is a cyclic number.

It is not a de Polignac number, because 40228652641 - 2¹⁷ = 40228521569 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40228652594 and 40228652603.

It is not a weakly prime, because it can be changed into another prime (40228652041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20114326320 + 20114326321.

It is an arithmetic number, because the mean of its divisors is an integer number (20114326321).

Almost surely, 2^40228652641 is an apocalyptic number.

It is an amenable number.

40228652641 is a deficient number, since it is larger than the sum of its proper divisors (1).

40228652641 is an equidigital number, since it uses as much as digits as its factorization.

40228652641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 184320, while the sum is 40.

The spelling of 40228652641 in words is "forty billion, two hundred twenty-eight million, six hundred fifty-two thousand, six hundred forty-one".