86191078455 has 32 divisors (see below), whose sum is σ = 156792049920. Its totient is φ = 44899535520.

The previous prime is 86191078447. The next prime is 86191078471. The reversal of 86191078455 is 55487019168.

It is a happy number.

86191078455 is a `hidden beast` number, since 8 + 619 + 10 + 7 + 8 + 4 + 5 + 5 = 666.

It is not a de Polignac number, because 86191078455 - 2³ = 86191078447 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7418061 + ... + 7429670.

It is an arithmetic number, because the mean of its divisors is an integer number (4899751560).

Almost surely, 2^86191078455 is an apocalyptic number.

86191078455 is a deficient number, since it is larger than the sum of its proper divisors (70600971465).

86191078455 is a wasteful number, since it uses less digits than its factorization.

86191078455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14847788 (or 14847782 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 54.

The spelling of 86191078455 in words is "eighty-six billion, one hundred ninety-one million, seventy-eight thousand, four hundred fifty-five".