20111152444 has 12 divisors (see below), whose sum is σ = 35207633664. Its totient is φ = 10051828544.

The previous prime is 20111152429. The next prime is 20111152463. The reversal of 20111152444 is 44425111102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 924829 + ... + 946324.

It is an arithmetic number, because the mean of its divisors is an integer number (2933969472).

Almost surely, 2^20111152444 is an apocalyptic number.

It is an amenable number.

20111152444 is a deficient number, since it is larger than the sum of its proper divisors (15096481220).

20111152444 is a wasteful number, since it uses less digits than its factorization.

20111152444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873844 (or 1873842 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 20111152444 its reverse (44425111102), we get a palindrome (64536263546).

The spelling of 20111152444 in words is "twenty billion, one hundred eleven million, one hundred fifty-two thousand, four hundred forty-four".