1641222145044 has 48 divisors (see below), whose sum is σ = 4255472202240. Its totient is φ = 547015956480.

The previous prime is 1641222145007. The next prime is 1641222145099. The reversal of 1641222145044 is 4405412221461.

1641222145044 is a `hidden beast` number, since 1 + 6 + 4 + 122 + 21 + 4 + 504 + 4 = 666.

It is a super-2 number, since 2×1641222145044² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220989 + ... + 1825179.

It is an arithmetic number, because the mean of its divisors is an integer number (88655670880).

Almost surely, 2^{1641222145044} is an apocalyptic number.

It is an amenable number.

1641222145044 is an abundant number, since it is smaller than the sum of its proper divisors (2614250057196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1641222145044 is a wasteful number, since it uses less digits than its factorization.

1641222145044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613677 (or 1613669 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The spelling of 1641222145044 in words is "one trillion, six hundred forty-one billion, two hundred twenty-two million, one hundred forty-five thousand, forty-four".