40578538547 has 2 divisors, whose sum is σ = 40578538548. Its totient is φ = 40578538546.

The previous prime is 40578538541. The next prime is 40578538597. The reversal of 40578538547 is 74583587504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40578538547 - 2²⁶ = 40511429683 is a prime.

It is a super-2 number, since 2×40578538547² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40578538492 and 40578538501.

It is not a weakly prime, because it can be changed into another prime (40578538541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20289269273 + 20289269274.

It is an arithmetic number, because the mean of its divisors is an integer number (20289269274).

Almost surely, 2^40578538547 is an apocalyptic number.

40578538547 is a deficient number, since it is larger than the sum of its proper divisors (1).

40578538547 is an equidigital number, since it uses as much as digits as its factorization.

40578538547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816000, while the sum is 56.

The spelling of 40578538547 in words is "forty billion, five hundred seventy-eight million, five hundred thirty-eight thousand, five hundred forty-seven".