1261607830712 has 64 divisors (see below), whose sum is σ = 2553702228000. Its totient is φ = 582185926656.

The previous prime is 1261607830687. The next prime is 1261607830789. The reversal of 1261607830712 is 2170387061621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 999239 + ... + 1876617.

Almost surely, 2^{1261607830712} is an apocalyptic number.

It is an amenable number.

1261607830712 is an abundant number, since it is smaller than the sum of its proper divisors (1292094397288).

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

1261607830712 is a wasteful number, since it uses less digits than its factorization.

1261607830712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877608 (or 877604 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 44.

The spelling of 1261607830712 in words is "one trillion, two hundred sixty-one billion, six hundred seven million, eight hundred thirty thousand, seven hundred twelve".