266046627640 has 64 divisors (see below), whose sum is σ = 624875549760. Its totient is φ = 101751936000.

The previous prime is 266046627629. The next prime is 266046627677. The reversal of 266046627640 is 46726640662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2352390 + ... + 2462890.

It is an arithmetic number, because the mean of its divisors is an integer number (9763680465).

Almost surely, 2^266046627640 is an apocalyptic number.

266046627640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266046627640 is an abundant number, since it is smaller than the sum of its proper divisors (358828922120).

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

266046627640 is a wasteful number, since it uses less digits than its factorization.

266046627640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113152 (or 113148 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 49.

The spelling of 266046627640 in words is "two hundred sixty-six billion, forty-six million, six hundred twenty-seven thousand, six hundred forty".