1266477012 has 48 divisors (see below), whose sum is σ = 3292228800. Its totient is φ = 421031520.

The previous prime is 1266477011. The next prime is 1266477019. The reversal of 1266477012 is 2107746621.

1266477012 is a `hidden beast` number, since 1 + 2 + 6 + 647 + 7 + 0 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266477011) 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 15 ways as a sum of consecutive naturals, for example, 25462 + ... + 56402.

It is an arithmetic number, because the mean of its divisors is an integer number (68588100).

Almost surely, 2^1266477012 is an apocalyptic number.

1266477012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1266477012 is an abundant number, since it is smaller than the sum of its proper divisors (2025751788).

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

1266477012 is a wasteful number, since it uses less digits than its factorization.

1266477012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31333 (or 31325 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 1266477012 is about 35587.5963223143. The cubic root of 1266477012 is about 1081.9298519627.

It can be divided in two parts, 12664 and 77012, that added together give a triangular number (89676 = T₄₂₃).

The spelling of 1266477012 in words is "one billion, two hundred sixty-six million, four hundred seventy-seven thousand, twelve".