2051165564 has 12 divisors (see below), whose sum is σ = 4102331184. Its totient is φ = 879070944.

The previous prime is 2051165551. The next prime is 2051165579. The reversal of 2051165564 is 4655611502.

2051165564 is an admirable number.

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, 36627929 + ... + 36627984.

It is an arithmetic number, because the mean of its divisors is an integer number (341860932).

Almost surely, 2^2051165564 is an apocalyptic number.

It is an amenable number.

2051165564 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2051165564 is a wasteful number, since it uses less digits than its factorization.

2051165564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73255924 (or 73255922 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 2051165564 is about 45289.7953627525. The cubic root of 2051165564 is about 1270.5748041802.

The spelling of 2051165564 in words is "two billion, fifty-one million, one hundred sixty-five thousand, five hundred sixty-four".