12354687437 has 4 divisors (see below), whose sum is σ = 12359107356. Its totient is φ = 12350267520.

The previous prime is 12354687407. The next prime is 12354687461. The reversal of 12354687437 is 73478645321.

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 4437424996 + 7917262441 = 66614^2 + 88979^2 .

It is a cyclic number.

It is not a de Polignac number, because 12354687437 - 2⁸ = 12354687181 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 (12354687407) 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, 2205764 + ... + 2211357.

It is an arithmetic number, because the mean of its divisors is an integer number (3089776839).

Almost surely, 2^12354687437 is an apocalyptic number.

It is an amenable number.

12354687437 is a deficient number, since it is larger than the sum of its proper divisors (4419919).

12354687437 is an equidigital number, since it uses as much as digits as its factorization.

12354687437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4419918.

The product of its digits is 3386880, while the sum is 50.

The spelling of 12354687437 in words is "twelve billion, three hundred fifty-four million, six hundred eighty-seven thousand, four hundred thirty-seven".