266650140422601 has 32 divisors (see below), whose sum is σ = 447815500496000. Its totient is φ = 155455952307264.

The previous prime is 266650140422599. The next prime is 266650140422609. The reversal of 266650140422601 is 106224041056662.

It is not a de Polignac number, because 266650140422601 - 2¹ = 266650140422599 is a prime.

It is a super-2 number, since 2×266650140422601² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (266650140422609) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19991756746 + ... + 19991770083.

It is an arithmetic number, because the mean of its divisors is an integer number (13994234390500).

Almost surely, 2^{266650140422601} is an apocalyptic number.

It is an amenable number.

266650140422601 is a deficient number, since it is larger than the sum of its proper divisors (181165360073399).

266650140422601 is a wasteful number, since it uses less digits than its factorization.

266650140422601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39983526870 (or 39983526864 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 266650140422601 in words is "two hundred sixty-six trillion, six hundred fifty billion, one hundred forty million, four hundred twenty-two thousand, six hundred one".