42878516158547 has 2 divisors, whose sum is σ = 42878516158548. Its totient is φ = 42878516158546.

The previous prime is 42878516158493. The next prime is 42878516158553. The reversal of 42878516158547 is 74585161587824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42878516158547 - 2¹⁶ = 42878516093011 is a prime.

It is not a weakly prime, because it can be changed into another prime (42878516958547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21439258079273 + 21439258079274.

It is an arithmetic number, because the mean of its divisors is an integer number (21439258079274).

Almost surely, 2^{42878516158547} is an apocalyptic number.

42878516158547 is a deficient number, since it is larger than the sum of its proper divisors (1).

42878516158547 is an equidigital number, since it uses as much as digits as its factorization.

42878516158547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 602112000, while the sum is 71.

The spelling of 42878516158547 in words is "forty-two trillion, eight hundred seventy-eight billion, five hundred sixteen million, one hundred fifty-eight thousand, five hundred forty-seven".