86672438407 has 4 divisors (see below), whose sum is σ = 86745457656. Its totient is φ = 86599419160.

The previous prime is 86672438387. The next prime is 86672438443. The reversal of 86672438407 is 70483427668.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86672438407 is a prime.

It is a super-2 number, since 2×86672438407² (a number of 23 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 (86672438107) 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, 36507844 + ... + 36510217.

It is an arithmetic number, because the mean of its divisors is an integer number (21686364414).

Almost surely, 2^86672438407 is an apocalyptic number.

86672438407 is a deficient number, since it is larger than the sum of its proper divisors (73019249).

86672438407 is a wasteful number, since it uses less digits than its factorization.

86672438407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73019248.

The product of its (nonzero) digits is 10838016, while the sum is 55.

The spelling of 86672438407 in words is "eighty-six billion, six hundred seventy-two million, four hundred thirty-eight thousand, four hundred seven".