86378642943 has 16 divisors (see below), whose sum is σ = 116062622976. Its totient is φ = 57141057600.

The previous prime is 86378642939. The next prime is 86378642953. The reversal of 86378642943 is 34924687368.

It is not a de Polignac number, because 86378642943 - 2² = 86378642939 is a prime.

It is a super-2 number, since 2×86378642943² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86378642953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305755 + ... + 515987.

It is an arithmetic number, because the mean of its divisors is an integer number (7253913936).

Almost surely, 2^86378642943 is an apocalyptic number.

86378642943 is a deficient number, since it is larger than the sum of its proper divisors (29683980033).

86378642943 is a wasteful number, since it uses less digits than its factorization.

86378642943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211294.

The product of its digits is 41803776, while the sum is 60.

The spelling of 86378642943 in words is "eighty-six billion, three hundred seventy-eight million, six hundred forty-two thousand, nine hundred forty-three".