20450402022155 has 8 divisors (see below), whose sum is σ = 28046265630432. Its totient is φ = 14023132815168.

The previous prime is 20450402022139. The next prime is 20450402022173. The reversal of 20450402022155 is 55122020405402.

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

It is a cyclic number.

It is not a de Polignac number, because 20450402022155 - 2⁴ = 20450402022139 is a prime.

It is a super-2 number, since 2×20450402022155² (a number of 27 digits) contains 22 as substring.

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, 292148600282 + ... + 292148600351.

It is an arithmetic number, because the mean of its divisors is an integer number (3505783203804).

Almost surely, 2^{20450402022155} is an apocalyptic number.

20450402022155 is a deficient number, since it is larger than the sum of its proper divisors (7595863608277).

20450402022155 is an equidigital number, since it uses as much as digits as its factorization.

20450402022155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584297200645.

The product of its (nonzero) digits is 32000, while the sum is 32.

Adding to 20450402022155 its reverse (55122020405402), we get a palindrome (75572422427557).

The spelling of 20450402022155 in words is "twenty trillion, four hundred fifty billion, four hundred two million, twenty-two thousand, one hundred fifty-five".