84378512071 has 8 divisors (see below), whose sum is σ = 96434601344. Its totient is φ = 72322926840.

The previous prime is 84378512069. The next prime is 84378512081. The reversal of 84378512071 is 17021587348.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84378512071 - 2¹ = 84378512069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84378512021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355276 + ... + 543118.

It is an arithmetic number, because the mean of its divisors is an integer number (12054325168).

Almost surely, 2^84378512071 is an apocalyptic number.

84378512071 is a deficient number, since it is larger than the sum of its proper divisors (12056089273).

84378512071 is a wasteful number, since it uses less digits than its factorization.

84378512071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252021.

The product of its (nonzero) digits is 376320, while the sum is 46.

The spelling of 84378512071 in words is "eighty-four billion, three hundred seventy-eight million, five hundred twelve thousand, seventy-one".