1997026099200 has 1680 divisors, whose sum is σ = 8526928014000. Its totient is φ = 458647142400.

The previous prime is 1997026099171. The next prime is 1997026099223. The reversal of 1997026099200 is 29906207991.

1997026099200 is a `hidden beast` number, since 1 + 9 + 9 + 7 + 0 + 2 + 609 + 9 + 20 + 0 = 666.

It is a super-2 number, since 2×1997026099200² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 105106636791 + ... + 105106636809.

Almost surely, 2^{1997026099200} is an apocalyptic number.

1997026099200 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 1997026099200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4263464007000).

1997026099200 is an abundant number, since it is smaller than the sum of its proper divisors (6529901914800).

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

1997026099200 is an frugal number, since it uses more digits than its factorization.

1997026099200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 54.

The spelling of 1997026099200 in words is "one trillion, nine hundred ninety-seven billion, twenty-six million, ninety-nine thousand, two hundred".