1641696961239 has 96 divisors (see below), whose sum is σ = 2532133094400. Its totient is φ = 1062487041408.

The previous prime is 1641696961207. The next prime is 1641696961241. The reversal of 1641696961239 is 9321696961461.

1641696961239 is a `hidden beast` number, since 1 + 6 + 4 + 1 + 6 + 9 + 6 + 9 + 612 + 3 + 9 = 666.

It is not a de Polignac number, because 1641696961239 - 2⁵ = 1641696961207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641696961939) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 543067282 + ... + 543070304.

It is an arithmetic number, because the mean of its divisors is an integer number (26376386400).

Almost surely, 2^{1641696961239} is an apocalyptic number.

1641696961239 is a deficient number, since it is larger than the sum of its proper divisors (890436133161).

1641696961239 is a wasteful number, since it uses less digits than its factorization.

1641696961239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3523 (or 3511 counting only the distinct ones).

The product of its digits is 22674816, while the sum is 63.

The spelling of 1641696961239 in words is "one trillion, six hundred forty-one billion, six hundred ninety-six million, nine hundred sixty-one thousand, two hundred thirty-nine".