1266252790272 has 40 divisors (see below), whose sum is σ = 3373376578176. Its totient is φ = 422084262912.

The previous prime is 1266252790247. The next prime is 1266252790303. The reversal of 1266252790272 is 2720972526621.

It is a super-2 number, since 2×1266252790272² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412190128 + ... + 412193199.

Almost surely, 2^{1266252790272} is an apocalyptic number.

1266252790272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1266252790272 is an abundant number, since it is smaller than the sum of its proper divisors (2107123787904).

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

1266252790272 is an frugal number, since it uses more digits than its factorization.

1266252790272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824383348 (or 824383332 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 51.

The spelling of 1266252790272 in words is "one trillion, two hundred sixty-six billion, two hundred fifty-two million, seven hundred ninety thousand, two hundred seventy-two".