134985206997 has 20 divisors (see below), whose sum is σ = 202474411040. Its totient is φ = 89990124876.

The previous prime is 134985206971. The next prime is 134985206999. The reversal of 134985206997 is 799602589431.

134985206997 is a `hidden beast` number, since 1 + 3 + 49 + 8 + 520 + 69 + 9 + 7 = 666.

It is not a de Polignac number, because 134985206997 - 2⁶ = 134985206933 is a prime.

It is a super-2 number, since 2×134985206997² (a number of 23 digits) contains 22 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 (134985206999) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3409297 + ... + 3448662.

It is an arithmetic number, because the mean of its divisors is an integer number (10123720552).

It is a 1-persistent number, because it is pandigital, but 2⋅134985206997 = 269970413994 is not.

Almost surely, 2^134985206997 is an apocalyptic number.

It is an amenable number.

134985206997 is a deficient number, since it is larger than the sum of its proper divisors (67489204043).

134985206997 is an frugal number, since it uses more digits than its factorization.

134985206997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6857986 (or 6857962 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 63.

The spelling of 134985206997 in words is "one hundred thirty-four billion, nine hundred eighty-five million, two hundred six thousand, nine hundred ninety-seven".