1662454539993 has 32 divisors (see below), whose sum is σ = 2557984980096. Its totient is φ = 951268727808.

The previous prime is 1662454539953. The next prime is 1662454540003. The reversal of 1662454539993 is 3999354542661.

It is not a de Polignac number, because 1662454539993 - 2⁸ = 1662454539737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1662454539943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15050230 + ... + 15160287.

It is an arithmetic number, because the mean of its divisors is an integer number (79937030628).

Almost surely, 2^{1662454539993} is an apocalyptic number.

1662454539993 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1662454539993 is a deficient number, since it is larger than the sum of its proper divisors (895530440103).

1662454539993 is a wasteful number, since it uses less digits than its factorization.

1662454539993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30210633.

The product of its digits is 188956800, while the sum is 66.

The spelling of 1662454539993 in words is "one trillion, six hundred sixty-two billion, four hundred fifty-four million, five hundred thirty-nine thousand, nine hundred ninety-three".