12051017748 has 576 divisors, whose sum is σ = 42290626560. Its totient is φ = 2822688000.

The previous prime is 12051017747. The next prime is 12051017789. The reversal of 12051017748 is 84771015021.

12051017748 is a `hidden beast` number, since 120 + 510 + 17 + 7 + 4 + 8 = 666.

It is a super-2 number, since 2×12051017748² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12051017747) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 197557638 + ... + 197557698.

Almost surely, 2^12051017748 is an apocalyptic number.

12051017748 is a gapful number since it is divisible by the number (18) 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 12051017748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21145313280).

12051017748 is an abundant number, since it is smaller than the sum of its proper divisors (30239608812).

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

12051017748 is a wasteful number, since it uses less digits than its factorization.

12051017748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 36.

The spelling of 12051017748 in words is "twelve billion, fifty-one million, seventeen thousand, seven hundred forty-eight".