2170975336929 has 27 divisors (see below), whose sum is σ = 3647881299153. Its totient is φ = 1240539654312.

The previous prime is 2170975336889. The next prime is 2170975336967. The reversal of 2170975336929 is 9296335790712.

The square root of 2170975336929 is 1473423.

It is a perfect power (a square), and thus also a powerful number.

2170975336929 is a `hidden beast` number, since 2 + 1 + 7 + 0 + 9 + 7 + 533 + 6 + 92 + 9 = 666.

It is not a de Polignac number, because 2170975336929 - 2⁹ = 2170975336417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (2170975336969) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 30906802 + ... + 30976964.

Almost surely, 2^{2170975336929} is an apocalyptic number.

2170975336929 is the 1473423-rd square number.

2170975336929 is the 736712-nd centered octagonal number.

It is an amenable number.

2170975336929 is a deficient number, since it is larger than the sum of its proper divisors (1476905962224).

2170975336929 is an frugal number, since it uses more digits than its factorization.

2170975336929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140346 (or 70173 counting only the distinct ones).

The product of its (nonzero) digits is 38578680, while the sum is 63.

The spelling of 2170975336929 in words is "two trillion, one hundred seventy billion, nine hundred seventy-five million, three hundred thirty-six thousand, nine hundred twenty-nine".