40641162612251 has 2 divisors, whose sum is σ = 40641162612252. Its totient is φ = 40641162612250.

The previous prime is 40641162612181. The next prime is 40641162612307. The reversal of 40641162612251 is 15221626114604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40641162612251 - 2¹⁰ = 40641162611227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40641162612199 and 40641162612208.

It is not a weakly prime, because it can be changed into another prime (40641162602251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20320581306125 + 20320581306126.

It is an arithmetic number, because the mean of its divisors is an integer number (20320581306126).

Almost surely, 2^{40641162612251} is an apocalyptic number.

40641162612251 is a deficient number, since it is larger than the sum of its proper divisors (1).

40641162612251 is an equidigital number, since it uses as much as digits as its factorization.

40641162612251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 41.

Adding to 40641162612251 its reverse (15221626114604), we get a palindrome (55862788726855).

The spelling of 40641162612251 in words is "forty trillion, six hundred forty-one billion, one hundred sixty-two million, six hundred twelve thousand, two hundred fifty-one".