1266610455 has 72 divisors (see below), whose sum is σ = 2478805056. Its totient is φ = 597421440.

The previous prime is 1266610453. The next prime is 1266610459. The reversal of 1266610455 is 5540166621.

It is not a de Polignac number, because 1266610455 - 2¹ = 1266610453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266610453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 198322 + ... + 204608.

It is an arithmetic number, because the mean of its divisors is an integer number (34427848).

Almost surely, 2^1266610455 is an apocalyptic number.

1266610455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1266610455 is a deficient number, since it is larger than the sum of its proper divisors (1212194601).

1266610455 is a wasteful number, since it uses less digits than its factorization.

1266610455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6357 (or 6343 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 1266610455 is about 35589.4711256012. The cubic root of 1266610455 is about 1081.9678499928.

The spelling of 1266610455 in words is "one billion, two hundred sixty-six million, six hundred ten thousand, four hundred fifty-five".