1601621546988 has 24 divisors (see below), whose sum is σ = 3746977420480. Its totient is φ = 532465209360.

The previous prime is 1601621546981. The next prime is 1601621547007. The reversal of 1601621546988 is 8896451261061.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1601621546981) 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, 176075218 + ... + 176084313.

Almost surely, 2^{1601621546988} is an apocalyptic number.

It is an amenable number.

1601621546988 is an abundant number, since it is smaller than the sum of its proper divisors (2145355873492).

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

1601621546988 is a wasteful number, since it uses less digits than its factorization.

1601621546988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352159917 (or 352159915 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 57.

The spelling of 1601621546988 in words is "one trillion, six hundred one billion, six hundred twenty-one million, five hundred forty-six thousand, nine hundred eighty-eight".