1662650561004 has 24 divisors (see below), whose sum is σ = 3879818679408. Its totient is φ = 554173896000.

The previous prime is 1662650561003. The next prime is 1662650561017. The reversal of 1662650561004 is 4001650562661.

It is not an unprimeable number, because it can be changed into a prime (1662650561003) 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, 5208247 + ... + 5518254.

It is an arithmetic number, because the mean of its divisors is an integer number (161659111642).

Almost surely, 2^{1662650561004} is an apocalyptic number.

It is an amenable number.

1662650561004 is an abundant number, since it is smaller than the sum of its proper divisors (2217168118404).

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

1662650561004 is a wasteful number, since it uses less digits than its factorization.

1662650561004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10739425 (or 10739423 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 1662650561004 in words is "one trillion, six hundred sixty-two billion, six hundred fifty million, five hundred sixty-one thousand, four".