1621141329983 has 8 divisors (see below), whose sum is σ = 1853921372160. Its totient is φ = 1388658393720.

The previous prime is 1621141329911. The next prime is 1621141330027. The reversal of 1621141329983 is 3899231411261.

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

It is a cyclic number.

It is not a de Polignac number, because 1621141329983 - 2¹⁶ = 1621141264447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1621141323983) 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, 74264783 + ... + 74286608.

It is an arithmetic number, because the mean of its divisors is an integer number (231740171520).

Almost surely, 2^{1621141329983} is an apocalyptic number.

1621141329983 is a deficient number, since it is larger than the sum of its proper divisors (232780042177).

1621141329983 is a wasteful number, since it uses less digits than its factorization.

1621141329983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148552957.

The product of its digits is 559872, while the sum is 50.

The spelling of 1621141329983 in words is "one trillion, six hundred twenty-one billion, one hundred forty-one million, three hundred twenty-nine thousand, nine hundred eighty-three".