42789023687167 has 4 divisors (see below), whose sum is σ = 43514261376840. Its totient is φ = 42063785997496.

The previous prime is 42789023687143. The next prime is 42789023687233. The reversal of 42789023687167 is 76178632098724.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42789023687167 - 2³⁹ = 42239267873279 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42789023687096 and 42789023687105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42789023387167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362618844748 + ... + 362618844865.

It is an arithmetic number, because the mean of its divisors is an integer number (10878565344210).

Almost surely, 2^{42789023687167} is an apocalyptic number.

42789023687167 is a deficient number, since it is larger than the sum of its proper divisors (725237689673).

42789023687167 is an equidigital number, since it uses as much as digits as its factorization.

42789023687167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725237689672.

The product of its (nonzero) digits is 341397504, while the sum is 70.

The spelling of 42789023687167 in words is "forty-two trillion, seven hundred eighty-nine billion, twenty-three million, six hundred eighty-seven thousand, one hundred sixty-seven".