2061156435636 has 12 divisors (see below), whose sum is σ = 4809365016512. Its totient is φ = 687052145208.

The previous prime is 2061156435589. The next prime is 2061156435659. The reversal of 2061156435636 is 6365346511602.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85881518140 + ... + 85881518163.

Almost surely, 2^{2061156435636} is an apocalyptic number.

It is an amenable number.

2061156435636 is an abundant number, since it is smaller than the sum of its proper divisors (2748208580876).

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

2061156435636 is a wasteful number, since it uses less digits than its factorization.

2061156435636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171763036310 (or 171763036308 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 48.

The spelling of 2061156435636 in words is "two trillion, sixty-one billion, one hundred fifty-six million, four hundred thirty-five thousand, six hundred thirty-six".