2551465066 has 8 divisors (see below), whose sum is σ = 3959170020. Its totient is φ = 1231741728.

The previous prime is 2551465061. The next prime is 2551465067. The reversal of 2551465066 is 6605641552.

It can be written as a sum of positive squares in 2 ways, for example, as 2543084041 + 8381025 = 50429^2 + 2895^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2551465061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21995331 + ... + 21995446.

Almost surely, 2^2551465066 is an apocalyptic number.

2551465066 is a deficient number, since it is larger than the sum of its proper divisors (1407704954).

2551465066 is a wasteful number, since it uses less digits than its factorization.

2551465066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43990808.

The product of its (nonzero) digits is 216000, while the sum is 40.

The square root of 2551465066 is about 50512.0289238118. The cubic root of 2551465066 is about 1366.4588009723.

The spelling of 2551465066 in words is "two billion, five hundred fifty-one million, four hundred sixty-five thousand, sixty-six".