12501211845 has 16 divisors (see below), whose sum is σ = 20038518720. Its totient is φ = 6655119744.

The previous prime is 12501211841. The next prime is 12501211871. The reversal of 12501211845 is 54811210521.

It is not a de Polignac number, because 12501211845 - 2² = 12501211841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12501211841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 753600 + ... + 770009.

It is an arithmetic number, because the mean of its divisors is an integer number (1252407420).

Almost surely, 2^12501211845 is an apocalyptic number.

12501211845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12501211845 is a deficient number, since it is larger than the sum of its proper divisors (7537306875).

12501211845 is a wasteful number, since it uses less digits than its factorization.

12501211845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524164.

The product of its (nonzero) digits is 3200, while the sum is 30.

The spelling of 12501211845 in words is "twelve billion, five hundred one million, two hundred eleven thousand, eight hundred forty-five".