20542125350147 has 32 divisors (see below), whose sum is σ = 23499640581120. Its totient is φ = 17856632787840.

The previous prime is 20542125350137. The next prime is 20542125350167. The reversal of 20542125350147 is 74105352124502.

It is a cyclic number.

It is not a de Polignac number, because 20542125350147 - 2⁸ = 20542125349891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20542125350137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7798928 + ... + 10094925.

It is an arithmetic number, because the mean of its divisors is an integer number (734363768160).

Almost surely, 2^{20542125350147} is an apocalyptic number.

20542125350147 is a deficient number, since it is larger than the sum of its proper divisors (2957515230973).

20542125350147 is a wasteful number, since it uses less digits than its factorization.

20542125350147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17894003.

The product of its (nonzero) digits is 336000, while the sum is 41.

Adding to 20542125350147 its reverse (74105352124502), we get a palindrome (94647477474649).

The spelling of 20542125350147 in words is "twenty trillion, five hundred forty-two billion, one hundred twenty-five million, three hundred fifty thousand, one hundred forty-seven".