12501262645020 has 144 divisors (see below), whose sum is σ = 38181395109312. Its totient is φ = 3310783580160.

The previous prime is 12501262645019. The next prime is 12501262645033. The reversal of 12501262645020 is 2054626210521.

12501262645020 is a `hidden beast` number, since 1 + 2 + 5 + 0 + 1 + 2 + 6 + 2 + 645 + 0 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23948724 + ... + 24465156.

It is an arithmetic number, because the mean of its divisors is an integer number (265148577148).

Almost surely, 2^{12501262645020} is an apocalyptic number.

12501262645020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12501262645020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19090697554656).

12501262645020 is an abundant number, since it is smaller than the sum of its proper divisors (25680132464292).

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

12501262645020 is a wasteful number, since it uses less digits than its factorization.

12501262645020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517372 (or 517367 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 12501262645020 its reverse (2054626210521), we get a palindrome (14555888855541).

The spelling of 12501262645020 in words is "twelve trillion, five hundred one billion, two hundred sixty-two million, six hundred forty-five thousand, twenty".