86640615077872 has 10 divisors (see below), whose sum is σ = 167866191713408. Its totient is φ = 43320307538928.

The previous prime is 86640615077867. The next prime is 86640615077897. The reversal of 86640615077872 is 27877051604668.

It is a junction number, because it is equal to n+sod(n) for n = 86640615077798 and 86640615077807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2707519221168 + ... + 2707519221199.

Almost surely, 2^{86640615077872} is an apocalyptic number.

It is an amenable number.

86640615077872 is a deficient number, since it is larger than the sum of its proper divisors (81225576635536).

86640615077872 is a wasteful number, since it uses less digits than its factorization.

86640615077872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5415038442375 (or 5415038442369 counting only the distinct ones).

The product of its (nonzero) digits is 189665280, while the sum is 67.

The spelling of 86640615077872 in words is "eighty-six trillion, six hundred forty billion, six hundred fifteen million, seventy-seven thousand, eight hundred seventy-two".