86155275212721 has 48 divisors (see below), whose sum is σ = 146758796376192. Its totient is φ = 48015489945600.

The previous prime is 86155275212717. The next prime is 86155275212723. The reversal of 86155275212721 is 12721257255168.

86155275212721 is a `hidden beast` number, since 8 + 6 + 1 + 55 + 27 + 521 + 27 + 21 = 666.

It is not a de Polignac number, because 86155275212721 - 2² = 86155275212717 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86155275212723) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 126929040 + ... + 127606001.

It is an arithmetic number, because the mean of its divisors is an integer number (3057474924504).

Almost surely, 2^{86155275212721} is an apocalyptic number.

It is an amenable number.

86155275212721 is a deficient number, since it is larger than the sum of its proper divisors (60603521163471).

86155275212721 is a wasteful number, since it uses less digits than its factorization.

86155275212721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254535334 (or 254535331 counting only the distinct ones).

The product of its digits is 4704000, while the sum is 54.

The spelling of 86155275212721 in words is "eighty-six trillion, one hundred fifty-five billion, two hundred seventy-five million, two hundred twelve thousand, seven hundred twenty-one".