86278776645127 has 4 divisors (see below), whose sum is σ = 94122301794696. Its totient is φ = 78435251495560.

The previous prime is 86278776645079. The next prime is 86278776645133. The reversal of 86278776645127 is 72154667787268.

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 86278776645127 - 2¹⁵ = 86278776612359 is a prime.

It is a super-2 number, since 2×86278776645127² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86278776645137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3921762574768 + ... + 3921762574789.

It is an arithmetic number, because the mean of its divisors is an integer number (23530575448674).

Almost surely, 2^{86278776645127} is an apocalyptic number.

86278776645127 is a deficient number, since it is larger than the sum of its proper divisors (7843525149569).

86278776645127 is a wasteful number, since it uses less digits than its factorization.

86278776645127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7843525149568.

The product of its digits is 2655313920, while the sum is 76.

The spelling of 86278776645127 in words is "eighty-six trillion, two hundred seventy-eight billion, seven hundred seventy-six million, six hundred forty-five thousand, one hundred twenty-seven".