83857148045907 has 4 divisors (see below), whose sum is σ = 111809530727880. Its totient is φ = 55904765363936.

The previous prime is 83857148045899. The next prime is 83857148045963. The reversal of 83857148045907 is 70954084175838.

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 83857148045907 - 2³ = 83857148045899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83857148045207) 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 in 3 ways as a sum of consecutive naturals, for example, 13976191340982 + ... + 13976191340987.

It is an arithmetic number, because the mean of its divisors is an integer number (27952382681970).

Almost surely, 2^{83857148045907} is an apocalyptic number.

83857148045907 is a deficient number, since it is larger than the sum of its proper divisors (27952382681973).

83857148045907 is a wasteful number, since it uses less digits than its factorization.

83857148045907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27952382681972.

The product of its (nonzero) digits is 270950400, while the sum is 69.

The spelling of 83857148045907 in words is "eighty-three trillion, eight hundred fifty-seven billion, one hundred forty-eight million, forty-five thousand, nine hundred seven".