12521465770 has 64 divisors (see below), whose sum is σ = 26062601472. Its totient is φ = 4280704000.

The previous prime is 12521465743. The next prime is 12521465771. The reversal of 12521465770 is 7756412521.

It is not an unprimeable number, because it can be changed into a prime (12521465771) 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 31 ways as a sum of consecutive naturals, for example, 1980915 + ... + 1987225.

It is an arithmetic number, because the mean of its divisors is an integer number (407228148).

Almost surely, 2^12521465770 is an apocalyptic number.

12521465770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12521465770 is an abundant number, since it is smaller than the sum of its proper divisors (13541135702).

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

12521465770 is a wasteful number, since it uses less digits than its factorization.

12521465770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7407.

The product of its (nonzero) digits is 117600, while the sum is 40.

The spelling of 12521465770 in words is "twelve billion, five hundred twenty-one million, four hundred sixty-five thousand, seven hundred seventy".