260039277666 has 384 divisors, whose sum is σ = 732697954560. Its totient is φ = 67889332224.

The previous prime is 260039277653. The next prime is 260039277671. The reversal of 260039277666 is 666772930062.

260039277666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×260039277666³ (a number of 35 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 450674370 + ... + 450674946.

It is an arithmetic number, because the mean of its divisors is an integer number (1908067590).

Almost surely, 2^260039277666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 260039277666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (366348977280).

260039277666 is an abundant number, since it is smaller than the sum of its proper divisors (472658676894).

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

260039277666 is a wasteful number, since it uses less digits than its factorization.

260039277666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895 (or 882 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 54.

The spelling of 260039277666 in words is "two hundred sixty billion, thirty-nine million, two hundred seventy-seven thousand, six hundred sixty-six".