20532455155 has 16 divisors (see below), whose sum is σ = 25523470080. Its totient is φ = 15837833088.

The previous prime is 20532455131. The next prime is 20532455179. The reversal of 20532455155 is 55155423502.

It is an interprime number because it is at equal distance from previous prime (20532455131) and next prime (20532455179).

It is a cyclic number.

It is not a de Polignac number, because 20532455155 - 2⁵ = 20532455123 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9694 + ... + 202876.

It is an arithmetic number, because the mean of its divisors is an integer number (1595216880).

Almost surely, 2^20532455155 is an apocalyptic number.

20532455155 is a deficient number, since it is larger than the sum of its proper divisors (4991014925).

20532455155 is a wasteful number, since it uses less digits than its factorization.

20532455155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193950.

The product of its (nonzero) digits is 150000, while the sum is 37.

Adding to 20532455155 its reverse (55155423502), we get a palindrome (75687878657).

The spelling of 20532455155 in words is "twenty billion, five hundred thirty-two million, four hundred fifty-five thousand, one hundred fifty-five".