12745484730 has 128 divisors (see below), whose sum is σ = 38690058240. Its totient is φ = 2955458880.

The previous prime is 12745484729. The next prime is 12745484743. The reversal of 12745484730 is 3748454721.

12745484730 is a `hidden beast` number, since 1 + 2 + 74 + 548 + 4 + 7 + 30 = 666.

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

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, 24982 + ... + 161601.

It is an arithmetic number, because the mean of its divisors is an integer number (302266080).

Almost surely, 2^12745484730 is an apocalyptic number.

12745484730 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 12745484730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19345029120).

12745484730 is an abundant number, since it is smaller than the sum of its proper divisors (25944573510).

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

12745484730 is a wasteful number, since it uses less digits than its factorization.

12745484730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186633 (or 186627 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The spelling of 12745484730 in words is "twelve billion, seven hundred forty-five million, four hundred eighty-four thousand, seven hundred thirty".