1629539971197 has 16 divisors (see below), whose sum is σ = 2207163613440. Its totient is φ = 1069224916032.

The previous prime is 1629539971187. The next prime is 1629539971201. The reversal of 1629539971197 is 7911799359261.

It is not a de Polignac number, because 1629539971197 - 2⁷ = 1629539971069 is a prime.

It is a super-2 number, since 2×1629539971197² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1629539971127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10769818 + ... + 10920075.

It is an arithmetic number, because the mean of its divisors is an integer number (137947725840).

Almost surely, 2^{1629539971197} is an apocalyptic number.

It is an amenable number.

1629539971197 is a deficient number, since it is larger than the sum of its proper divisors (577623642243).

1629539971197 is a wasteful number, since it uses less digits than its factorization.

1629539971197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21690292.

The product of its digits is 57868020, while the sum is 69.

The spelling of 1629539971197 in words is "one trillion, six hundred twenty-nine billion, five hundred thirty-nine million, nine hundred seventy-one thousand, one hundred ninety-seven".