66204402260 has 48 divisors (see below), whose sum is σ = 141286460112. Its totient is φ = 26053632000.

The previous prime is 66204402239. The next prime is 66204402281. The reversal of 66204402260 is 6220440266.

It is an interprime number because it is at equal distance from previous prime (66204402239) and next prime (66204402281).

It can be written as a sum of positive squares in 8 ways, for example, as 7758438724 + 58445963536 = 88082^2 + 241756^2 .

It is a congruent number.

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, 528920 + ... + 642000.

It is an arithmetic number, because the mean of its divisors is an integer number (2943467919).

Almost surely, 2^66204402260 is an apocalyptic number.

It is an amenable number.

66204402260 is an abundant number, since it is smaller than the sum of its proper divisors (75082057852).

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

66204402260 is a wasteful number, since it uses less digits than its factorization.

66204402260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113564 (or 113562 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The spelling of 66204402260 in words is "sixty-six billion, two hundred four million, four hundred two thousand, two hundred sixty".