42665871707 has 2 divisors, whose sum is σ = 42665871708. Its totient is φ = 42665871706.

The previous prime is 42665871649. The next prime is 42665871739. The reversal of 42665871707 is 70717856624.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42665871707 - 2⁶ = 42665871643 is a prime.

It is not a weakly prime, because it can be changed into another prime (42665871607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21332935853 + 21332935854.

It is an arithmetic number, because the mean of its divisors is an integer number (21332935854).

Almost surely, 2^42665871707 is an apocalyptic number.

42665871707 is a deficient number, since it is larger than the sum of its proper divisors (1).

42665871707 is an equidigital number, since it uses as much as digits as its factorization.

42665871707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3951360, while the sum is 53.

The spelling of 42665871707 in words is "forty-two billion, six hundred sixty-five million, eight hundred seventy-one thousand, seven hundred seven".