42523451999879 has 2 divisors, whose sum is σ = 42523451999880. Its totient is φ = 42523451999878.

The previous prime is 42523451999869. The next prime is 42523452000101. The reversal of 42523451999879 is 97899915432524.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42523451999879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42523451999869) 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, 21261725999939 + 21261725999940.

It is an arithmetic number, because the mean of its divisors is an integer number (21261725999940).

Almost surely, 2^{42523451999879} is an apocalyptic number.

42523451999879 is a deficient number, since it is larger than the sum of its proper divisors (1).

42523451999879 is an equidigital number, since it uses as much as digits as its factorization.

42523451999879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1763596800, while the sum is 77.

The spelling of 42523451999879 in words is "forty-two trillion, five hundred twenty-three billion, four hundred fifty-one million, nine hundred ninety-nine thousand, eight hundred seventy-nine".