42907688849933 has 2 divisors, whose sum is σ = 42907688849934. Its totient is φ = 42907688849932.

The previous prime is 42907688849917. The next prime is 42907688850031. The reversal of 42907688849933 is 33994888670924.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39864802844164 + 3042886005769 = 6313858^2 + 1744387^2 .

It is a cyclic number.

It is not a de Polignac number, because 42907688849933 - 2⁴ = 42907688849917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42907688849633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21453844424966 + 21453844424967.

It is an arithmetic number, because the mean of its divisors is an integer number (21453844424967).

Almost surely, 2^{42907688849933} is an apocalyptic number.

It is an amenable number.

42907688849933 is a deficient number, since it is larger than the sum of its proper divisors (1).

42907688849933 is an equidigital number, since it uses as much as digits as its factorization.

42907688849933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4514807808, while the sum is 80.

The spelling of 42907688849933 in words is "forty-two trillion, nine hundred seven billion, six hundred eighty-eight million, eight hundred forty-nine thousand, nine hundred thirty-three".