1100000999958 has 64 divisors (see below), whose sum is σ = 2705829815808. Its totient is φ = 290949419520.

The previous prime is 1100000999887. The next prime is 1100000999969. The reversal of 1100000999958 is 8599990000011.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 1100000999958.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12584460 + ... + 12671567.

It is an arithmetic number, because the mean of its divisors is an integer number (42278590872).

Almost surely, 2^{1100000999958} is an apocalyptic number.

1100000999958 is an abundant number, since it is smaller than the sum of its proper divisors (1605828815850).

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

1100000999958 is a wasteful number, since it uses less digits than its factorization.

1100000999958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25256117.

The product of its (nonzero) digits is 262440, while the sum is 51.

Adding to 1100000999958 its reverse (8599990000011), we get a palindrome (9699990999969).

The spelling of 1100000999958 in words is "one trillion, one hundred billion, nine hundred ninety-nine thousand, nine hundred fifty-eight".