1665955799702 has 16 divisors (see below), whose sum is σ = 2542249048320. Its totient is φ = 818550123048.

The previous prime is 1665955799693. The next prime is 1665955799731. The reversal of 1665955799702 is 2079975595661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2354498 + ... + 2979189.

It is an arithmetic number, because the mean of its divisors is an integer number (158890565520).

Almost surely, 2^{1665955799702} is an apocalyptic number.

1665955799702 is a deficient number, since it is larger than the sum of its proper divisors (876293248618).

1665955799702 is a wasteful number, since it uses less digits than its factorization.

1665955799702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5336395.

The product of its (nonzero) digits is 321489000, while the sum is 71.

The spelling of 1665955799702 in words is "one trillion, six hundred sixty-five billion, nine hundred fifty-five million, seven hundred ninety-nine thousand, seven hundred two".