64506102666 has 32 divisors (see below), whose sum is σ = 132996150720. Its totient is φ = 20848028544.

The previous prime is 64506102653. The next prime is 64506102691. The reversal of 64506102666 is 66620160546.

It is a happy number.

It is a super-2 number, since 2×64506102666² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1222245 + ... + 1273928.

It is an arithmetic number, because the mean of its divisors is an integer number (4156129710).

Almost surely, 2^64506102666 is an apocalyptic number.

64506102666 is an abundant number, since it is smaller than the sum of its proper divisors (68490048054).

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

64506102666 is a wasteful number, since it uses less digits than its factorization.

64506102666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2496310.

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 64506102666 in words is "sixty-four billion, five hundred six million, one hundred two thousand, six hundred sixty-six".