401251366266 has 8 divisors (see below), whose sum is σ = 802502732544. Its totient is φ = 133750455420.

The previous prime is 401251366247. The next prime is 401251366267. The reversal of 401251366266 is 662663152104.

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

401251366266 is an admirable number.

It is a super-2 number, since 2×401251366266² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (401251366267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33437613850 + ... + 33437613861.

It is an arithmetic number, because the mean of its divisors is an integer number (100312841568).

Almost surely, 2^401251366266 is an apocalyptic number.

401251366266 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

401251366266 is a wasteful number, since it uses less digits than its factorization.

401251366266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66875227716.

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

The spelling of 401251366266 in words is "four hundred one billion, two hundred fifty-one million, three hundred sixty-six thousand, two hundred sixty-six".