1606207661642 has 24 divisors (see below), whose sum is σ = 2575074238176. Its totient is φ = 751225192128.

The previous prime is 1606207661609. The next prime is 1606207661683. The reversal of 1606207661642 is 2461667026061.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8430038 + ... + 8618465.

It is an arithmetic number, because the mean of its divisors is an integer number (107294759924).

Almost surely, 2^{1606207661642} is an apocalyptic number.

1606207661642 is a deficient number, since it is larger than the sum of its proper divisors (968866576534).

1606207661642 is a wasteful number, since it uses less digits than its factorization.

1606207661642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17048702 (or 17048685 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 47.

The spelling of 1606207661642 in words is "one trillion, six hundred six billion, two hundred seven million, six hundred sixty-one thousand, six hundred forty-two".