1642807073824 has 36 divisors (see below), whose sum is σ = 3762321561054. Its totient is φ = 704060173824.

The previous prime is 1642807073821. The next prime is 1642807073833. The reversal of 1642807073824 is 4283707082461.

It can be written as a sum of positive squares in only one way, i.e., 1437840810000 + 204966263824 = 1199100^2 + 452732^2 .

It is not an unprimeable number, because it can be changed into a prime (1642807073821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 523852729 + ... + 523855864.

Almost surely, 2^{1642807073824} is an apocalyptic number.

1642807073824 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1642807073824 is an abundant number, since it is smaller than the sum of its proper divisors (2119514487230).

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

1642807073824 is a wasteful number, since it uses less digits than its factorization.

1642807073824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047708617 (or 1047708602 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 52.

The spelling of 1642807073824 in words is "one trillion, six hundred forty-two billion, eight hundred seven million, seventy-three thousand, eight hundred twenty-four".