2036155661 has 16 divisors (see below), whose sum is σ = 2191847808. Its totient is φ = 1887019200.

The previous prime is 2036155631. The next prime is 2036155687. The reversal of 2036155661 is 1665516302.

It is a cyclic number.

It is not a de Polignac number, because 2036155661 - 2¹⁴ = 2036139277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2036155631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83171 + ... + 104831.

It is an arithmetic number, because the mean of its divisors is an integer number (136990488).

Almost surely, 2^2036155661 is an apocalyptic number.

It is an amenable number.

2036155661 is a deficient number, since it is larger than the sum of its proper divisors (155692147).

2036155661 is a wasteful number, since it uses less digits than its factorization.

2036155661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21812.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 2036155661 is about 45123.7815458767. The cubic root of 2036155661 is about 1267.4679667245.

The spelling of 2036155661 in words is "two billion, thirty-six million, one hundred fifty-five thousand, six hundred sixty-one".