86720841669 has 16 divisors (see below), whose sum is σ = 144159321600. Its totient is φ = 45049787760.

The previous prime is 86720841653. The next prime is 86720841709. The reversal of 86720841669 is 96614802768.

It is not a de Polignac number, because 86720841669 - 2⁴ = 86720841653 is a prime.

It is a super-2 number, since 2×86720841669² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86720841619) 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, 187707219 + ... + 187707680.

It is an arithmetic number, because the mean of its divisors is an integer number (9009957600).

Almost surely, 2^86720841669 is an apocalyptic number.

It is an amenable number.

86720841669 is a deficient number, since it is larger than the sum of its proper divisors (57438479931).

86720841669 is a wasteful number, since it uses less digits than its factorization.

86720841669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375414920.

The product of its (nonzero) digits is 6967296, while the sum is 57.

The spelling of 86720841669 in words is "eighty-six billion, seven hundred twenty million, eight hundred forty-one thousand, six hundred sixty-nine".