20261022445 has 8 divisors (see below), whose sum is σ = 24320775960. Its totient is φ = 16203785280.

The previous prime is 20261022409. The next prime is 20261022491. The reversal of 20261022445 is 54422016202.

It can be written as a sum of positive squares in 4 ways, for example, as 170511364 + 20090511081 = 13058^2 + 141741^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20261022445 - 2¹¹ = 20261020397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 611326 + ... + 643615.

It is an arithmetic number, because the mean of its divisors is an integer number (3040096995).

Almost surely, 2^20261022445 is an apocalyptic number.

It is an amenable number.

20261022445 is a deficient number, since it is larger than the sum of its proper divisors (4059753515).

20261022445 is a wasteful number, since it uses less digits than its factorization.

20261022445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258175.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 20261022445 its reverse (54422016202), we get a palindrome (74683038647).

The spelling of 20261022445 in words is "twenty billion, two hundred sixty-one million, twenty-two thousand, four hundred forty-five".