8161170021355 has 16 divisors (see below), whose sum is σ = 10609896959424. Its totient is φ = 5990622076800.

The previous prime is 8161170021331. The next prime is 8161170021383. The reversal of 8161170021355 is 5531200711618.

It is not a de Polignac number, because 8161170021355 - 2¹⁷ = 8161169890283 is a prime.

It is a super-2 number, since 2×8161170021355² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 375906696 + ... + 375928405.

It is an arithmetic number, because the mean of its divisors is an integer number (663118559964).

Almost surely, 2^{8161170021355} is an apocalyptic number.

8161170021355 is a deficient number, since it is larger than the sum of its proper divisors (2448726938069).

8161170021355 is a wasteful number, since it uses less digits than its factorization.

8161170021355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751835286.

The product of its (nonzero) digits is 50400, while the sum is 40.

The spelling of 8161170021355 in words is "eight trillion, one hundred sixty-one billion, one hundred seventy million, twenty-one thousand, three hundred fifty-five".