1266658794270 has 96 divisors (see below), whose sum is σ = 3617368934400. Its totient is φ = 306085044672.

The previous prime is 1266658794221. The next prime is 1266658794277. The reversal of 1266658794270 is 724978566621.

It is a super-2 number, since 2×1266658794270² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1266658794198 and 1266658794207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266658794277) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16063630 + ... + 16142289.

It is an arithmetic number, because the mean of its divisors is an integer number (37680926400).

Almost surely, 2^{1266658794270} is an apocalyptic number.

1266658794270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1266658794270 is an abundant number, since it is smaller than the sum of its proper divisors (2350710140130).

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

1266658794270 is a wasteful number, since it uses less digits than its factorization.

1266658794270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32205974 (or 32205971 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 63.

The spelling of 1266658794270 in words is "one trillion, two hundred sixty-six billion, six hundred fifty-eight million, seven hundred ninety-four thousand, two hundred seventy".