2151655066 has 16 divisors (see below), whose sum is σ = 3527964000. Its totient is φ = 976060080.

The previous prime is 2151655049. The next prime is 2151655069. The reversal of 2151655066 is 6605561512.

It is a super-3 number, since 3×2151655066³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2151655069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87021 + ... + 108976.

It is an arithmetic number, because the mean of its divisors is an integer number (220497750).

Almost surely, 2^2151655066 is an apocalyptic number.

2151655066 is a deficient number, since it is larger than the sum of its proper divisors (1376308934).

2151655066 is a wasteful number, since it uses less digits than its factorization.

2151655066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196509.

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 2151655066 is about 46385.9360798076. The cubic root of 2151655066 is about 1290.9939790237.

The spelling of 2151655066 in words is "two billion, one hundred fifty-one million, six hundred fifty-five thousand, sixty-six".