1641165903610 has 8 divisors (see below), whose sum is σ = 2954098626516. Its totient is φ = 656466361440.

The previous prime is 1641165903521. The next prime is 1641165903613. The reversal of 1641165903610 is 163095611461.

It can be written as a sum of positive squares in 2 ways, for example, as 1617747416649 + 23418486961 = 1271907^2 + 153031^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1641165903610² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1641165903613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82058295171 + ... + 82058295190.

Almost surely, 2^{1641165903610} is an apocalyptic number.

1641165903610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1641165903610 is a deficient number, since it is larger than the sum of its proper divisors (1312932722906).

1641165903610 is a wasteful number, since it uses less digits than its factorization.

1641165903610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164116590368.

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 1641165903610 in words is "one trillion, six hundred forty-one billion, one hundred sixty-five million, nine hundred three thousand, six hundred ten".