1261457663133 has 32 divisors (see below), whose sum is σ = 1798780901760. Its totient is φ = 783549849600.

The previous prime is 1261457663101. The next prime is 1261457663143. The reversal of 1261457663133 is 3313667541621.

It is not a de Polignac number, because 1261457663133 - 2⁵ = 1261457663101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261457663143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45979566 + ... + 46006992.

It is an arithmetic number, because the mean of its divisors is an integer number (56211903180).

Almost surely, 2^{1261457663133} is an apocalyptic number.

It is an amenable number.

1261457663133 is a deficient number, since it is larger than the sum of its proper divisors (537323238627).

1261457663133 is a wasteful number, since it uses less digits than its factorization.

1261457663133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36477.

The product of its digits is 1632960, while the sum is 48.

The spelling of 1261457663133 in words is "one trillion, two hundred sixty-one billion, four hundred fifty-seven million, six hundred sixty-three thousand, one hundred thirty-three".