40420364403547 has 2 divisors, whose sum is σ = 40420364403548. Its totient is φ = 40420364403546.

The previous prime is 40420364403533. The next prime is 40420364403599. The reversal of 40420364403547 is 74530446302404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40420364403547 - 2³⁹ = 39870608589659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40420364403497 and 40420364403506.

It is not a weakly prime, because it can be changed into another prime (40420364407547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20210182201773 + 20210182201774.

It is an arithmetic number, because the mean of its divisors is an integer number (20210182201774).

Almost surely, 2^{40420364403547} is an apocalyptic number.

40420364403547 is a deficient number, since it is larger than the sum of its proper divisors (1).

40420364403547 is an equidigital number, since it uses as much as digits as its factorization.

40420364403547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3870720, while the sum is 46.

The spelling of 40420364403547 in words is "forty trillion, four hundred twenty billion, three hundred sixty-four million, four hundred three thousand, five hundred forty-seven".