201456651266 has 8 divisors (see below), whose sum is σ = 325429975164. Its totient is φ = 92979992880.

The previous prime is 201456651241. The next prime is 201456651281. The reversal of 201456651266 is 662156654102.

It can be written as a sum of positive squares in 2 ways, for example, as 187557420241 + 13899231025 = 433079^2 + 117895^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3874166345 + ... + 3874166396.

Almost surely, 2^201456651266 is an apocalyptic number.

201456651266 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

201456651266 is a deficient number, since it is larger than the sum of its proper divisors (123973323898).

201456651266 is a wasteful number, since it uses less digits than its factorization.

201456651266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7748332756.

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 201456651266 in words is "two hundred one billion, four hundred fifty-six million, six hundred fifty-one thousand, two hundred sixty-six".