12998651040 has 384 divisors, whose sum is σ = 46774506240. Its totient is φ = 3370291200.

The previous prime is 12998651033. The next prime is 12998651047. The reversal of 12998651040 is 4015689921.

12998651040 is a `hidden beast` number, since 1 + 2 + 9 + 98 + 6 + 510 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (12998651033) and next prime (12998651047).

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

It is not an unprimeable number, because it can be changed into a prime (12998651047) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28196410 + ... + 28196870.

It is an arithmetic number, because the mean of its divisors is an integer number (121808610).

Almost surely, 2^12998651040 is an apocalyptic number.

12998651040 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 12998651040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23387253120).

12998651040 is an abundant number, since it is smaller than the sum of its proper divisors (33775855200).

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

12998651040 is a wasteful number, since it uses less digits than its factorization.

12998651040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 12998651040 in words is "twelve billion, nine hundred ninety-eight million, six hundred fifty-one thousand, forty".