12400461821501 has 4 divisors (see below), whose sum is σ = 13354343500092. Its totient is φ = 11446580142912.

The previous prime is 12400461821443. The next prime is 12400461821507. The reversal of 12400461821501 is 10512816400421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1823013036100 + 10577448785401 = 1350190^2 + 3252299^2 .

It is a cyclic number.

It is not a de Polignac number, because 12400461821501 - 2¹⁴ = 12400461805117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12400461821507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476940839276 + ... + 476940839301.

It is an arithmetic number, because the mean of its divisors is an integer number (3338585875023).

Almost surely, 2^{12400461821501} is an apocalyptic number.

It is an amenable number.

12400461821501 is a deficient number, since it is larger than the sum of its proper divisors (953881678591).

12400461821501 is an equidigital number, since it uses as much as digits as its factorization.

12400461821501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953881678590.

The product of its (nonzero) digits is 15360, while the sum is 35.

The spelling of 12400461821501 in words is "twelve trillion, four hundred billion, four hundred sixty-one million, eight hundred twenty-one thousand, five hundred one".