1661542034424 has 64 divisors (see below), whose sum is σ = 4234146134400. Its totient is φ = 543237887616.

The previous prime is 1661542034381. The next prime is 1661542034473. The reversal of 1661542034424 is 4244302451661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2723499 + ... + 3277274.

It is an arithmetic number, because the mean of its divisors is an integer number (66158533350).

Almost surely, 2^{1661542034424} is an apocalyptic number.

It is an amenable number.

1661542034424 is an abundant number, since it is smaller than the sum of its proper divisors (2572604099976).

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

1661542034424 is a wasteful number, since it uses less digits than its factorization.

1661542034424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6001004 (or 6001000 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 42.

The spelling of 1661542034424 in words is "one trillion, six hundred sixty-one billion, five hundred forty-two million, thirty-four thousand, four hundred twenty-four".