1265131832100 has 144 divisors (see below), whose sum is σ = 3916269967680. Its totient is φ = 314372620800.

The previous prime is 1265131832093. The next prime is 1265131832149. The reversal of 1265131832100 is 12381315621.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1471587 + ... + 2166986.

It is an arithmetic number, because the mean of its divisors is an integer number (27196319220).

Almost surely, 2^{1265131832100} is an apocalyptic number.

1265131832100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1265131832100 is an abundant number, since it is smaller than the sum of its proper divisors (2651138135580).

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

1265131832100 is a wasteful number, since it uses less digits than its factorization.

1265131832100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3638670 (or 3638663 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 1265131832100 in words is "one trillion, two hundred sixty-five billion, one hundred thirty-one million, eight hundred thirty-two thousand, one hundred".