2179169157969 has 48 divisors (see below), whose sum is σ = 3341623559040. Its totient is φ = 1363725227520.

The previous prime is 2179169157961. The next prime is 2179169157983. The reversal of 2179169157969 is 9697519619712.

It is not a de Polignac number, because 2179169157969 - 2³ = 2179169157961 is a prime.

It is a super-2 number, since 2×2179169157969² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2179169157897 and 2179169157906.

It is not an unprimeable number, because it can be changed into a prime (2179169157961) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 113141062 + ... + 113160320.

It is an arithmetic number, because the mean of its divisors is an integer number (69617157480).

Almost surely, 2^{2179169157969} is an apocalyptic number.

It is an amenable number.

2179169157969 is a deficient number, since it is larger than the sum of its proper divisors (1162454401071).

2179169157969 is a wasteful number, since it uses less digits than its factorization.

2179169157969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21190 (or 21187 counting only the distinct ones).

The product of its digits is 115736040, while the sum is 72.

The spelling of 2179169157969 in words is "two trillion, one hundred seventy-nine billion, one hundred sixty-nine million, one hundred fifty-seven thousand, nine hundred sixty-nine".