1011643334655 has 16 divisors (see below), whose sum is σ = 1618641861984. Its totient is φ = 539538936320.

The previous prime is 1011643334587. The next prime is 1011643334677. The reversal of 1011643334655 is 5564333461101.

It is not a de Polignac number, because 1011643334655 - 2¹¹ = 1011643332607 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3385267 + ... + 3671963.

It is an arithmetic number, because the mean of its divisors is an integer number (101165116374).

Almost surely, 2^{1011643334655} is an apocalyptic number.

1011643334655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1011643334655 is a deficient number, since it is larger than the sum of its proper divisors (606998527329).

1011643334655 is a wasteful number, since it uses less digits than its factorization.

1011643334655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521946.

The product of its (nonzero) digits is 388800, while the sum is 42.

Adding to 1011643334655 its reverse (5564333461101), we get a palindrome (6575976795756).

The spelling of 1011643334655 in words is "one trillion, eleven billion, six hundred forty-three million, three hundred thirty-four thousand, six hundred fifty-five".