12719257530 has 64 divisors (see below), whose sum is σ = 36012515328. Its totient is φ = 2813474880.

The previous prime is 12719257517. The next prime is 12719257549. The reversal of 12719257530 is 3575291721.

It is a super-2 number, since 2×12719257530² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 970392 + ... + 983411.

It is an arithmetic number, because the mean of its divisors is an integer number (562695552).

Almost surely, 2^12719257530 is an apocalyptic number.

12719257530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12719257530 is an abundant number, since it is smaller than the sum of its proper divisors (23293257798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12719257530 is a wasteful number, since it uses less digits than its factorization.

12719257530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953851.

The product of its (nonzero) digits is 132300, while the sum is 42.

The spelling of 12719257530 in words is "twelve billion, seven hundred nineteen million, two hundred fifty-seven thousand, five hundred thirty".