2111553305464 has 8 divisors (see below), whose sum is σ = 3959162447760. Its totient is φ = 1055776652728.

The previous prime is 2111553305429. The next prime is 2111553305479. The reversal of 2111553305464 is 4645033551112.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131972081584 + ... + 131972081599.

It is an arithmetic number, because the mean of its divisors is an integer number (494895305970).

Almost surely, 2^{2111553305464} is an apocalyptic number.

It is an amenable number.

2111553305464 is a deficient number, since it is larger than the sum of its proper divisors (1847609142296).

2111553305464 is a wasteful number, since it uses less digits than its factorization.

2111553305464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263944163189 (or 263944163185 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

Adding to 2111553305464 its reverse (4645033551112), we get a palindrome (6756586856576).

The spelling of 2111553305464 in words is "two trillion, one hundred eleven billion, five hundred fifty-three million, three hundred five thousand, four hundred sixty-four".