12315001551 has 8 divisors (see below), whose sum is σ = 16455164544. Its totient is φ = 8192419800.

The previous prime is 12315001549. The next prime is 12315001571. The reversal of 12315001551 is 15510051321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12315001551 - 2¹ = 12315001549 is a prime.

It is a super-2 number, since 2×12315001551² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12315001571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4393675 + ... + 4396476.

It is an arithmetic number, because the mean of its divisors is an integer number (2056895568).

Almost surely, 2^12315001551 is an apocalyptic number.

12315001551 is a deficient number, since it is larger than the sum of its proper divisors (4140162993).

12315001551 is an equidigital number, since it uses as much as digits as its factorization.

12315001551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8790621.

The product of its (nonzero) digits is 750, while the sum is 24.

Adding to 12315001551 its reverse (15510051321), we get a palindrome (27825052872).

The spelling of 12315001551 in words is "twelve billion, three hundred fifteen million, one thousand, five hundred fifty-one".