1601220543774 has 16 divisors (see below), whose sum is σ = 3202657252608. Its totient is φ = 533704153752.

The previous prime is 1601220543757. The next prime is 1601220543803. The reversal of 1601220543774 is 4773450221061.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8910502 + ... + 9088425.

It is an arithmetic number, because the mean of its divisors is an integer number (200166078288).

Almost surely, 2^{1601220543774} is an apocalyptic number.

1601220543774 is an abundant number, since it is smaller than the sum of its proper divisors (1601436708834).

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

1601220543774 is a wasteful number, since it uses less digits than its factorization.

1601220543774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18013759.

The product of its (nonzero) digits is 282240, while the sum is 42.

The spelling of 1601220543774 in words is "one trillion, six hundred one billion, two hundred twenty million, five hundred forty-three thousand, seven hundred seventy-four".