2069435554640 has 20 divisors (see below), whose sum is σ = 4811437664724. Its totient is φ = 827774221824.

The previous prime is 2069435554639. The next prime is 2069435554643. The reversal of 2069435554640 is 464555349602.

It can be written as a sum of positive squares in 2 ways, for example, as 1606698213136 + 462737341504 = 1267556^2 + 680248^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2069435554643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12933972137 + ... + 12933972296.

Almost surely, 2^{2069435554640} is an apocalyptic number.

2069435554640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2069435554640 is an abundant number, since it is smaller than the sum of its proper divisors (2742002110084).

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

2069435554640 is a wasteful number, since it uses less digits than its factorization.

2069435554640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25867944446 (or 25867944440 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 53.

The spelling of 2069435554640 in words is "two trillion, sixty-nine billion, four hundred thirty-five million, five hundred fifty-four thousand, six hundred forty".