1099545149439 has 96 divisors (see below), whose sum is σ = 1797893400576. Its totient is φ = 641520000000.

The previous prime is 1099545149407. The next prime is 1099545149467. The reversal of 1099545149439 is 9349415459901.

1099545149439 is a `hidden beast` number, since 1 + 0 + 9 + 9 + 54 + 5 + 149 + 439 = 666.

It is not a de Polignac number, because 1099545149439 - 2⁵ = 1099545149407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099545149239) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 610518339 + ... + 610520139.

It is an arithmetic number, because the mean of its divisors is an integer number (18728056256).

Almost surely, 2^{1099545149439} is an apocalyptic number.

1099545149439 is a deficient number, since it is larger than the sum of its proper divisors (698348251137).

1099545149439 is a wasteful number, since it uses less digits than its factorization.

1099545149439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2781 (or 2778 counting only the distinct ones).

The product of its (nonzero) digits is 31492800, while the sum is 63.

The spelling of 1099545149439 in words is "one trillion, ninety-nine billion, five hundred forty-five million, one hundred forty-nine thousand, four hundred thirty-nine".