164897681039 has 32 divisors (see below), whose sum is σ = 214676173824. Its totient is φ = 123086304000.

The previous prime is 164897681017. The next prime is 164897681041. The reversal of 164897681039 is 930186798461.

It is a cyclic number.

It is not a de Polignac number, because 164897681039 - 2³⁶ = 96178204303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164897681089) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 386837 + ... + 692414.

It is an arithmetic number, because the mean of its divisors is an integer number (6708630432).

Almost surely, 2^164897681039 is an apocalyptic number.

164897681039 is a deficient number, since it is larger than the sum of its proper divisors (49778492785).

164897681039 is a wasteful number, since it uses less digits than its factorization.

164897681039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079367.

The product of its (nonzero) digits is 15676416, while the sum is 62.

The spelling of 164897681039 in words is "one hundred sixty-four billion, eight hundred ninety-seven million, six hundred eighty-one thousand, thirty-nine".