1272994974720 has 792 divisors, whose sum is σ = 5256570035808. Its totient is φ = 283852800000.

The previous prime is 1272994974689. The next prime is 1272994974749. The reversal of 1272994974720 is 274794992721.

1272994974720 is a `hidden beast` number, since 1 + 2 + 72 + 9 + 9 + 4 + 97 + 472 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 92567845 + ... + 92581595.

Almost surely, 2^{1272994974720} is an apocalyptic number.

1272994974720 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 1272994974720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2628285017904).

1272994974720 is an abundant number, since it is smaller than the sum of its proper divisors (3983575061088).

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

1272994974720 is a wasteful number, since it uses less digits than its factorization.

1272994974720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13837 (or 13809 counting only the distinct ones).

The product of its (nonzero) digits is 32006016, while the sum is 63.

The spelling of 1272994974720 in words is "one trillion, two hundred seventy-two billion, nine hundred ninety-four million, nine hundred seventy-four thousand, seven hundred twenty".