86955199779 has 8 divisors (see below), whose sum is σ = 132503161600. Its totient is φ = 49688685576.

The previous prime is 86955199769. The next prime is 86955199787. The reversal of 86955199779 is 97799155968.

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

It is not a de Polignac number, because 86955199779 - 2⁷ = 86955199651 is a prime.

It is a super-3 number, since 3×86955199779³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86955199779.

It is not an unprimeable number, because it can be changed into a prime (86955199769) 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, 2070361879 + ... + 2070361920.

It is an arithmetic number, because the mean of its divisors is an integer number (16562895200).

Almost surely, 2^86955199779 is an apocalyptic number.

86955199779 is a deficient number, since it is larger than the sum of its proper divisors (45547961821).

86955199779 is a wasteful number, since it uses less digits than its factorization.

86955199779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4140723809.

The product of its digits is 385786800, while the sum is 75.

The spelling of 86955199779 in words is "eighty-six billion, nine hundred fifty-five million, one hundred ninety-nine thousand, seven hundred seventy-nine".