170420986471 has 4 divisors (see below), whose sum is σ = 172964583352. Its totient is φ = 167877389592.

The previous prime is 170420986469. The next prime is 170420986481. The reversal of 170420986471 is 174689024071.

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

It is a cyclic number.

It is not a de Polignac number, because 170420986471 - 2¹ = 170420986469 is a prime.

It is a super-3 number, since 3×170420986471³ (a number of 35 digits) contains 333 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 (170420986481) 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, 1271798340 + ... + 1271798473.

It is an arithmetic number, because the mean of its divisors is an integer number (43241145838).

Almost surely, 2^170420986471 is an apocalyptic number.

170420986471 is a deficient number, since it is larger than the sum of its proper divisors (2543596881).

170420986471 is an equidigital number, since it uses as much as digits as its factorization.

170420986471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2543596880.

The product of its (nonzero) digits is 677376, while the sum is 49.

The spelling of 170420986471 in words is "one hundred seventy billion, four hundred twenty million, nine hundred eighty-six thousand, four hundred seventy-one".