87643772167081 has 8 divisors (see below), whose sum is σ = 94386016524800. Its totient is φ = 80901587199312.

The previous prime is 87643772167037. The next prime is 87643772167109. The reversal of 87643772167081 is 18076127734678.

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

It is a cyclic number.

It is not a de Polignac number, because 87643772167081 - 2²¹ = 87643770069929 is a prime.

It is a super-2 number, since 2×87643772167081² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87643772166998 and 87643772167016.

It is not an unprimeable number, because it can be changed into a prime (87643772167381) 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, 11758695 + ... + 17707468.

It is an arithmetic number, because the mean of its divisors is an integer number (11798252065600).

Almost surely, 2^{87643772167081} is an apocalyptic number.

It is an amenable number.

87643772167081 is a deficient number, since it is larger than the sum of its proper divisors (6742244357719).

87643772167081 is a wasteful number, since it uses less digits than its factorization.

87643772167081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29694975.

The product of its (nonzero) digits is 132765696, while the sum is 67.

The spelling of 87643772167081 in words is "eighty-seven trillion, six hundred forty-three billion, seven hundred seventy-two million, one hundred sixty-seven thousand, eighty-one".