12531591470 has 16 divisors (see below), whose sum is σ = 22558253328. Its totient is φ = 5012328000.

The previous prime is 12531591467. The next prime is 12531591473. The reversal of 12531591470 is 7419513521.

It is an interprime number because it is at equal distance from previous prime (12531591467) and next prime (12531591473).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12531591473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205562 + ... + 259458.

It is an arithmetic number, because the mean of its divisors is an integer number (1409890833).

Almost surely, 2^12531591470 is an apocalyptic number.

12531591470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12531591470 is a deficient number, since it is larger than the sum of its proper divisors (10026661858).

12531591470 is a wasteful number, since it uses less digits than its factorization.

12531591470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77155.

The product of its (nonzero) digits is 37800, while the sum is 38.

The spelling of 12531591470 in words is "twelve billion, five hundred thirty-one million, five hundred ninety-one thousand, four hundred seventy".