20244535155 has 96 divisors (see below), whose sum is σ = 38329200000. Its totient is φ = 9825214464.

The previous prime is 20244535139. The next prime is 20244535183. The reversal of 20244535155 is 55153544202.

20244535155 is a `hidden beast` number, since 202 + 445 + 3 + 5 + 1 + 5 + 5 = 666.

It is not a de Polignac number, because 20244535155 - 2⁴ = 20244535139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16207971 + ... + 16209219.

It is an arithmetic number, because the mean of its divisors is an integer number (399262500).

Almost surely, 2^20244535155 is an apocalyptic number.

20244535155 is a deficient number, since it is larger than the sum of its proper divisors (18084664845).

20244535155 is a wasteful number, since it uses less digits than its factorization.

20244535155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645 (or 1642 counting only the distinct ones).

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

The spelling of 20244535155 in words is "twenty billion, two hundred forty-four million, five hundred thirty-five thousand, one hundred fifty-five".