4312240537561 has 4 divisors (see below), whose sum is σ = 4704262404624. Its totient is φ = 3920218670500.

The previous prime is 4312240537481. The next prime is 4312240537603. The reversal of 4312240537561 is 1657350422134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4312240537561 - 2⁷ = 4312240537433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4312240537061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196010933515 + ... + 196010933536.

It is an arithmetic number, because the mean of its divisors is an integer number (1176065601156).

Almost surely, 2^{4312240537561} is an apocalyptic number.

It is an amenable number.

4312240537561 is a deficient number, since it is larger than the sum of its proper divisors (392021867063).

4312240537561 is a wasteful number, since it uses less digits than its factorization.

4312240537561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392021867062.

The product of its (nonzero) digits is 604800, while the sum is 43.

Adding to 4312240537561 its reverse (1657350422134), we get a palindrome (5969590959695).

The spelling of 4312240537561 in words is "four trillion, three hundred twelve billion, two hundred forty million, five hundred thirty-seven thousand, five hundred sixty-one".