1099866746880 has 1664 divisors, whose sum is σ = 4650076569600. Its totient is φ = 243656294400.

The previous prime is 1099866746879. The next prime is 1099866746903. The reversal of 1099866746880 is 886476689901.

1099866746880 is a `hidden beast` number, since 1 + 0 + 9 + 9 + 86 + 6 + 7 + 468 + 80 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1099866746799 and 1099866746808.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3582627687 + ... + 3582627993.

Almost surely, 2^{1099866746880} is an apocalyptic number.

1099866746880 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 1099866746880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2325038284800).

1099866746880 is an abundant number, since it is smaller than the sum of its proper divisors (3550209822720).

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

1099866746880 is a wasteful number, since it uses less digits than its factorization.

1099866746880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 250822656, while the sum is 72.

The spelling of 1099866746880 in words is "one trillion, ninety-nine billion, eight hundred sixty-six million, seven hundred forty-six thousand, eight hundred eighty".