40046442473 has 2 divisors, whose sum is σ = 40046442474. Its totient is φ = 40046442472.

The previous prime is 40046442437. The next prime is 40046442487. The reversal of 40046442473 is 37424464004.

Together with previous prime (40046442437) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22061755024 + 17984687449 = 148532^2 + 134107^2 .

It is a cyclic number.

It is not a de Polignac number, because 40046442473 - 2²⁰ = 40045393897 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40046412473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20023221236 + 20023221237.

It is an arithmetic number, because the mean of its divisors is an integer number (20023221237).

Almost surely, 2^40046442473 is an apocalyptic number.

It is an amenable number.

40046442473 is a deficient number, since it is larger than the sum of its proper divisors (1).

40046442473 is an equidigital number, since it uses as much as digits as its factorization.

40046442473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 258048, while the sum is 38.

The spelling of 40046442473 in words is "forty billion, forty-six million, four hundred forty-two thousand, four hundred seventy-three".