1641164098541 has 8 divisors (see below), whose sum is σ = 1801764408864. Its totient is φ = 1482464383920.

The previous prime is 1641164098531. The next prime is 1641164098559. The reversal of 1641164098541 is 1458904611461.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1641164098541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1641164098541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641164098531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475147115 + ... + 475150568.

It is an arithmetic number, because the mean of its divisors is an integer number (225220551108).

Almost surely, 2^{1641164098541} is an apocalyptic number.

1641164098541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1641164098541 is a deficient number, since it is larger than the sum of its proper divisors (160600310323).

1641164098541 is a wasteful number, since it uses less digits than its factorization.

1641164098541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950297851.

The product of its (nonzero) digits is 829440, while the sum is 50.

The spelling of 1641164098541 in words is "one trillion, six hundred forty-one billion, one hundred sixty-four million, ninety-eight thousand, five hundred forty-one".