20022506035551 has 8 divisors (see below), whose sum is σ = 29662971904560. Its totient is φ = 13348337357016.

The previous prime is 20022506035541. The next prime is 20022506035619. The reversal of 20022506035551 is 15553060522002.

20022506035551 is a `hidden beast` number, since 2 + 0 + 0 + 2 + 250 + 6 + 0 + 355 + 51 = 666.

It is not a de Polignac number, because 20022506035551 - 2¹⁰ = 20022506034527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022506035541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370787148780 + ... + 370787148833.

It is an arithmetic number, because the mean of its divisors is an integer number (3707871488070).

Almost surely, 2^{20022506035551} is an apocalyptic number.

20022506035551 is a deficient number, since it is larger than the sum of its proper divisors (9640465869009).

20022506035551 is an equidigital number, since it uses as much as digits as its factorization.

20022506035551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741574297622 (or 741574297616 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

Adding to 20022506035551 its reverse (15553060522002), we get a palindrome (35575566557553).

The spelling of 20022506035551 in words is "twenty trillion, twenty-two billion, five hundred six million, thirty-five thousand, five hundred fifty-one".