66610002276 has 36 divisors (see below), whose sum is σ = 178279713612. Its totient is φ = 20897255424.

The previous prime is 66610002233. The next prime is 66610002307. The reversal of 66610002276 is 67220001666.

66610002276 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 48053024100 + 18556978176 = 219210^2 + 136224^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 66610002276.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54419325 + ... + 54420548.

It is an arithmetic number, because the mean of its divisors is an integer number (4952214267).

Almost surely, 2^66610002276 is an apocalyptic number.

It is an amenable number.

66610002276 is an abundant number, since it is smaller than the sum of its proper divisors (111669711336).

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

66610002276 is a wasteful number, since it uses less digits than its factorization.

66610002276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108839900 (or 108839895 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 66610002276 in words is "sixty-six billion, six hundred ten million, two thousand, two hundred seventy-six".