1641065013923 has 4 divisors (see below), whose sum is σ = 1651132897608. Its totient is φ = 1630997130240.

The previous prime is 1641065013881. The next prime is 1641065013947. The reversal of 1641065013923 is 3293105601461.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1641065013923 - 2⁶ = 1641065013859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1641065013223) 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, 5033941598 + ... + 5033941923.

It is an arithmetic number, because the mean of its divisors is an integer number (412783224402).

Almost surely, 2^{1641065013923} is an apocalyptic number.

1641065013923 is a deficient number, since it is larger than the sum of its proper divisors (10067883685).

1641065013923 is a wasteful number, since it uses less digits than its factorization.

1641065013923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10067883684.

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 1641065013923 in words is "one trillion, six hundred forty-one billion, sixty-five million, thirteen thousand, nine hundred twenty-three".