2091299130900 has 324 divisors, whose sum is σ = 7729742694492. Its totient is φ = 471462405120.

The previous prime is 2091299130743. The next prime is 2091299130911. The reversal of 2091299130900 is 90319921902.

It can be written as a sum of positive squares in 6 ways, for example, as 117083046276 + 1974216084624 = 342174^2 + 1405068^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 2894494 + ... + 3544106.

Almost surely, 2^{2091299130900} is an apocalyptic number.

2091299130900 is a gapful number since it is divisible by the number (20) 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 2091299130900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3864871347246).

2091299130900 is an abundant number, since it is smaller than the sum of its proper divisors (5638443563592).

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

2091299130900 is a wasteful number, since it uses less digits than its factorization.

2091299130900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649720 (or 649703 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 45.

The spelling of 2091299130900 in words is "two trillion, ninety-one billion, two hundred ninety-nine million, one hundred thirty thousand, nine hundred".