260201620666 has 32 divisors (see below), whose sum is σ = 440002321920. Its totient is φ = 114504534144.

The previous prime is 260201620663. The next prime is 260201620733. The reversal of 260201620666 is 666026102062.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (260201620663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 507906 + ... + 882253.

It is an arithmetic number, because the mean of its divisors is an integer number (13750072560).

Almost surely, 2^260201620666 is an apocalyptic number.

260201620666 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

260201620666 is a deficient number, since it is larger than the sum of its proper divisors (179800701254).

260201620666 is a wasteful number, since it uses less digits than its factorization.

260201620666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390510.

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 260201620666 in words is "two hundred sixty billion, two hundred one million, six hundred twenty thousand, six hundred sixty-six".