20235162644 has 12 divisors (see below), whose sum is σ = 35473773300. Its totient is φ = 10099798848.

The previous prime is 20235162637. The next prime is 20235162677. The reversal of 20235162644 is 44626153202.

It can be written as a sum of positive squares in 2 ways, for example, as 3700288900 + 16534873744 = 60830^2 + 128588^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4443059 + ... + 4447610.

It is an arithmetic number, because the mean of its divisors is an integer number (2956147775).

Almost surely, 2^20235162644 is an apocalyptic number.

It is an amenable number.

20235162644 is a deficient number, since it is larger than the sum of its proper divisors (15238610656).

20235162644 is a wasteful number, since it uses less digits than its factorization.

20235162644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8891242 (or 8891240 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The spelling of 20235162644 in words is "twenty billion, two hundred thirty-five million, one hundred sixty-two thousand, six hundred forty-four".