84380648057 has 4 divisors (see below), whose sum is σ = 84381904896. Its totient is φ = 84379391220.

The previous prime is 84380647987. The next prime is 84380648063. The reversal of 84380648057 is 75084608348.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84380648057 - 2¹² = 84380643961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84380644057) 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, 521669 + ... + 664002.

It is an arithmetic number, because the mean of its divisors is an integer number (21095476224).

Almost surely, 2^84380648057 is an apocalyptic number.

It is an amenable number.

84380648057 is a deficient number, since it is larger than the sum of its proper divisors (1256839).

84380648057 is a wasteful number, since it uses less digits than its factorization.

84380648057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256838.

The product of its (nonzero) digits is 5160960, while the sum is 53.

The spelling of 84380648057 in words is "eighty-four billion, three hundred eighty million, six hundred forty-eight thousand, fifty-seven".