12605739750 has 128 divisors (see below), whose sum is σ = 35088768000. Its totient is φ = 3349144800.

The previous prime is 12605739739. The next prime is 12605739761. The reversal of 12605739750 is 5793750621.

12605739750 is a `hidden beast` number, since 1 + 2 + 6 + 0 + 573 + 9 + 75 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (12605739739) and next prime (12605739761).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 12605739696 and 12605739705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1906951 + ... + 1913549.

It is an arithmetic number, because the mean of its divisors is an integer number (274131000).

Almost surely, 2^12605739750 is an apocalyptic number.

12605739750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12605739750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17544384000).

12605739750 is an abundant number, since it is smaller than the sum of its proper divisors (22483028250).

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

12605739750 is a wasteful number, since it uses less digits than its factorization.

12605739750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6908 (or 6892 counting only the distinct ones).

The product of its (nonzero) digits is 396900, while the sum is 45.

The spelling of 12605739750 in words is "twelve billion, six hundred five million, seven hundred thirty-nine thousand, seven hundred fifty".