1451152128861 has 60 divisors (see below), whose sum is σ = 2349910615932. Its totient is φ = 889350223104.

The previous prime is 1451152128857. The next prime is 1451152128863. The reversal of 1451152128861 is 1688212511541.

1451152128861 is a `hidden beast` number, since 1 + 4 + 511 + 5 + 2 + 128 + 8 + 6 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 818673897636 + 632478231225 = 904806^2 + 795285^2 .

It is not a de Polignac number, because 1451152128861 - 2² = 1451152128857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1451152128863) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2261095 + ... + 2831051.

Almost surely, 2^{1451152128861} is an apocalyptic number.

It is an amenable number.

1451152128861 is a deficient number, since it is larger than the sum of its proper divisors (898758487071).

1451152128861 is an equidigital number, since it uses as much as digits as its factorization.

1451152128861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570072 (or 570020 counting only the distinct ones).

The product of its digits is 153600, while the sum is 45.

The spelling of 1451152128861 in words is "one trillion, four hundred fifty-one billion, one hundred fifty-two million, one hundred twenty-eight thousand, eight hundred sixty-one".