2051155636 has 12 divisors (see below), whose sum is σ = 3640079520. Its totient is φ = 1011132920.

The previous prime is 2051155633. The next prime is 2051155637. The reversal of 2051155636 is 6365511502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051155633) 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, 3610906 + ... + 3611473.

It is an arithmetic number, because the mean of its divisors is an integer number (303339960).

Almost surely, 2^2051155636 is an apocalyptic number.

It is an amenable number.

2051155636 is a deficient number, since it is larger than the sum of its proper divisors (1588923884).

2051155636 is a wasteful number, since it uses less digits than its factorization.

2051155636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7222454 (or 7222452 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 2051155636 is about 45289.6857573554. The cubic root of 2051155636 is about 1270.5727542421.

The spelling of 2051155636 in words is "two billion, fifty-one million, one hundred fifty-five thousand, six hundred thirty-six".