40294043531947 has 2 divisors, whose sum is σ = 40294043531948. Its totient is φ = 40294043531946.

The previous prime is 40294043531899. The next prime is 40294043531981. The reversal of 40294043531947 is 74913534049204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40294043531947 - 2¹⁵ = 40294043499179 is a prime.

It is a super-2 number, since 2×40294043531947² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40294043501947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20147021765973 + 20147021765974.

It is an arithmetic number, because the mean of its divisors is an integer number (20147021765974).

Almost surely, 2^{40294043531947} is an apocalyptic number.

40294043531947 is a deficient number, since it is larger than the sum of its proper divisors (1).

40294043531947 is an equidigital number, since it uses as much as digits as its factorization.

40294043531947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13063680, while the sum is 55.

The spelling of 40294043531947 in words is "forty trillion, two hundred ninety-four billion, forty-three million, five hundred thirty-one thousand, nine hundred forty-seven".