12361107400381 has 4 divisors (see below), whose sum is σ = 12423854138652. Its totient is φ = 12298360662112.

The previous prime is 12361107400273. The next prime is 12361107400459. The reversal of 12361107400381 is 18300470116321.

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 5370852600100 + 6990254800281 = 2317510^2 + 2643909^2 .

It is a cyclic number.

It is not a de Polignac number, because 12361107400381 - 2¹⁵ = 12361107367613 is a prime.

It is a super-2 number, since 2×12361107400381² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12361107400381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12361107400981) 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, 31373368840 + ... + 31373369233.

It is an arithmetic number, because the mean of its divisors is an integer number (3105963534663).

Almost surely, 2^{12361107400381} is an apocalyptic number.

It is an amenable number.

12361107400381 is a deficient number, since it is larger than the sum of its proper divisors (62746738271).

12361107400381 is an equidigital number, since it uses as much as digits as its factorization.

12361107400381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62746738270.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 12361107400381 in words is "twelve trillion, three hundred sixty-one billion, one hundred seven million, four hundred thousand, three hundred eighty-one".