1099919797425 has 96 divisors (see below), whose sum is σ = 2077965394560. Its totient is φ = 570174508800.

The previous prime is 1099919797423. The next prime is 1099919797463. The reversal of 1099919797425 is 5247979199901.

1099919797425 is a `hidden beast` number, since 1 + 0 + 9 + 9 + 9 + 197 + 9 + 7 + 425 = 666.

It is not a de Polignac number, because 1099919797425 - 2¹ = 1099919797423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1099919797423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3684255 + ... + 3971595.

It is an arithmetic number, because the mean of its divisors is an integer number (21645472860).

Almost surely, 2^{1099919797425} is an apocalyptic number.

1099919797425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1099919797425 is a deficient number, since it is larger than the sum of its proper divisors (978045597135).

1099919797425 is a wasteful number, since it uses less digits than its factorization.

1099919797425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287520 (or 287509 counting only the distinct ones).

The product of its (nonzero) digits is 115736040, while the sum is 72.

The spelling of 1099919797425 in words is "one trillion, ninety-nine billion, nine hundred nineteen million, seven hundred ninety-seven thousand, four hundred twenty-five".