40274161724521 has 2 divisors, whose sum is σ = 40274161724522. Its totient is φ = 40274161724520.

The previous prime is 40274161724501. The next prime is 40274161724539. The reversal of 40274161724521 is 12542716147204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37674602065296 + 2599559659225 = 6137964^2 + 1612315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40274161724521 is a prime.

It is a super-2 number, since 2×40274161724521² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40274161724501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20137080862260 + 20137080862261.

It is an arithmetic number, because the mean of its divisors is an integer number (20137080862261).

Almost surely, 2^{40274161724521} is an apocalyptic number.

It is an amenable number.

40274161724521 is a deficient number, since it is larger than the sum of its proper divisors (1).

40274161724521 is an equidigital number, since it uses as much as digits as its factorization.

40274161724521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 752640, while the sum is 46.

The spelling of 40274161724521 in words is "forty trillion, two hundred seventy-four billion, one hundred sixty-one million, seven hundred twenty-four thousand, five hundred twenty-one".