86525178749 has 8 divisors (see below), whose sum is σ = 91870096320. Its totient is φ = 81208616896.

The previous prime is 86525178731. The next prime is 86525178787. The reversal of 86525178749 is 94787152568.

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 86525178749 - 2¹² = 86525174653 is a prime.

It is a super-3 number, since 3×86525178749³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 86525178691 and 86525178700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86525178709) 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, 7082639 + ... + 7094844.

It is an arithmetic number, because the mean of its divisors is an integer number (11483762040).

Almost surely, 2^86525178749 is an apocalyptic number.

It is an amenable number.

86525178749 is a deficient number, since it is larger than the sum of its proper divisors (5344917571).

86525178749 is a wasteful number, since it uses less digits than its factorization.

86525178749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14177859.

The product of its digits is 33868800, while the sum is 62.

The spelling of 86525178749 in words is "eighty-six billion, five hundred twenty-five million, one hundred seventy-eight thousand, seven hundred forty-nine".