20111152445 has 16 divisors (see below), whose sum is σ = 24452766000. Its totient is φ = 15876715008.

The previous prime is 20111152429. The next prime is 20111152463. The reversal of 20111152445 is 54425111102.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 670706404 + 19440446041 = 25898^2 + 139429^2 .

It is a cyclic number.

It is not a de Polignac number, because 20111152445 - 2⁴ = 20111152429 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, 182111 + ... + 270899.

It is an arithmetic number, because the mean of its divisors is an integer number (1528297875).

Almost surely, 2^20111152445 is an apocalyptic number.

It is an amenable number.

20111152445 is a deficient number, since it is larger than the sum of its proper divisors (4341613555).

20111152445 is an equidigital number, since it uses as much as digits as its factorization.

20111152445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89392.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 20111152445 its reverse (54425111102), we get a palindrome (74536263547).

The spelling of 20111152445 in words is "twenty billion, one hundred eleven million, one hundred fifty-two thousand, four hundred forty-five".