1997246739960 has 320 divisors, whose sum is σ = 6977431216800. Its totient is φ = 511791436800.

The previous prime is 1997246739919. The next prime is 1997246739991. The reversal of 1997246739960 is 699376427991.

1997246739960 is a `hidden beast` number, since 1 + 9 + 9 + 72 + 467 + 3 + 9 + 96 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 19775190 + ... + 19875930.

Almost surely, 2^{1997246739960} is an apocalyptic number.

1997246739960 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 1997246739960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3488715608400).

1997246739960 is an abundant number, since it is smaller than the sum of its proper divisors (4980184476840).

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

1997246739960 is a wasteful number, since it uses less digits than its factorization.

1997246739960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101004 (or 100991 counting only the distinct ones).

The product of its (nonzero) digits is 277766496, while the sum is 72.

The spelling of 1997246739960 in words is "one trillion, nine hundred ninety-seven billion, two hundred forty-six million, seven hundred thirty-nine thousand, nine hundred sixty".