40445173451 has 2 divisors, whose sum is σ = 40445173452. Its totient is φ = 40445173450.

The previous prime is 40445173421. The next prime is 40445173487. The reversal of 40445173451 is 15437154404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40445173451 - 2³⁴ = 23265304267 is a prime.

It is not a weakly prime, because it can be changed into another prime (40445173421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20222586725 + 20222586726.

It is an arithmetic number, because the mean of its divisors is an integer number (20222586726).

Almost surely, 2^40445173451 is an apocalyptic number.

40445173451 is a deficient number, since it is larger than the sum of its proper divisors (1).

40445173451 is an equidigital number, since it uses as much as digits as its factorization.

40445173451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134400, while the sum is 38.

The spelling of 40445173451 in words is "forty billion, four hundred forty-five million, one hundred seventy-three thousand, four hundred fifty-one".