40316412604921 has 2 divisors, whose sum is σ = 40316412604922. Its totient is φ = 40316412604920.

The previous prime is 40316412604879. The next prime is 40316412604927. The reversal of 40316412604921 is 12940621461304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30782922711696 + 9533489893225 = 5548236^2 + 3087635^2 .

It is a cyclic number.

It is not a de Polignac number, because 40316412604921 - 2¹³ = 40316412596729 is a prime.

It is not a weakly prime, because it can be changed into another prime (40316412604927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20158206302460 + 20158206302461.

It is an arithmetic number, because the mean of its divisors is an integer number (20158206302461).

Almost surely, 2^{40316412604921} is an apocalyptic number.

It is an amenable number.

40316412604921 is a deficient number, since it is larger than the sum of its proper divisors (1).

40316412604921 is an equidigital number, since it uses as much as digits as its factorization.

40316412604921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 40316412604921 in words is "forty trillion, three hundred sixteen billion, four hundred twelve million, six hundred four thousand, nine hundred twenty-one".