42780375154039 has 2 divisors, whose sum is σ = 42780375154040. Its totient is φ = 42780375154038.

The previous prime is 42780375154037. The next prime is 42780375154043. The reversal of 42780375154039 is 93045157308724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42780375154039 - 2¹ = 42780375154037 is a prime.

Together with 42780375154037, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42780375154037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21390187577019 + 21390187577020.

It is an arithmetic number, because the mean of its divisors is an integer number (21390187577020).

Almost surely, 2^{42780375154039} is an apocalyptic number.

42780375154039 is a deficient number, since it is larger than the sum of its proper divisors (1).

42780375154039 is an equidigital number, since it uses as much as digits as its factorization.

42780375154039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25401600, while the sum is 58.

The spelling of 42780375154039 in words is "forty-two trillion, seven hundred eighty billion, three hundred seventy-five million, one hundred fifty-four thousand, thirty-nine".