20345254155 has 24 divisors (see below), whose sum is σ = 35268929280. Its totient is φ = 10849626240.

The previous prime is 20345254081. The next prime is 20345254183. The reversal of 20345254155 is 55145254302.

20345254155 is a `hidden beast` number, since 2 + 0 + 3 + 452 + 54 + 155 = 666.

It is not a de Polignac number, because 20345254155 - 2¹⁴ = 20345237771 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 536470 + ... + 573140.

It is an arithmetic number, because the mean of its divisors is an integer number (1469538720).

Almost surely, 2^20345254155 is an apocalyptic number.

20345254155 is a deficient number, since it is larger than the sum of its proper divisors (14923675125).

20345254155 is a wasteful number, since it uses less digits than its factorization.

20345254155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49011 (or 49008 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 20345254155 in words is "twenty billion, three hundred forty-five million, two hundred fifty-four thousand, one hundred fifty-five".