40771451074421 has 2 divisors, whose sum is σ = 40771451074422. Its totient is φ = 40771451074420.

The previous prime is 40771451074381. The next prime is 40771451074447. The reversal of 40771451074421 is 12447015417704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39894559293796 + 876891780625 = 6316214^2 + 936425^2 .

It is a cyclic number.

It is not a de Polignac number, because 40771451074421 - 2⁴² = 36373404563317 is a prime.

It is a super-2 number, since 2×40771451074421² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40771451034421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20385725537210 + 20385725537211.

It is an arithmetic number, because the mean of its divisors is an integer number (20385725537211).

Almost surely, 2^{40771451074421} is an apocalyptic number.

It is an amenable number.

40771451074421 is a deficient number, since it is larger than the sum of its proper divisors (1).

40771451074421 is an equidigital number, since it uses as much as digits as its factorization.

40771451074421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 878080, while the sum is 47.

The spelling of 40771451074421 in words is "forty trillion, seven hundred seventy-one billion, four hundred fifty-one million, seventy-four thousand, four hundred twenty-one".