20004533155 has 16 divisors (see below), whose sum is σ = 24526085760. Its totient is φ = 15656804352.

The previous prime is 20004533147. The next prime is 20004533179. The reversal of 20004533155 is 55133540002.

It is a cyclic number.

It is not a de Polignac number, because 20004533155 - 2³ = 20004533147 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, 616087 + ... + 647743.

It is an arithmetic number, because the mean of its divisors is an integer number (1532880360).

Almost surely, 2^20004533155 is an apocalyptic number.

20004533155 is a deficient number, since it is larger than the sum of its proper divisors (4521552605).

20004533155 is a wasteful number, since it uses less digits than its factorization.

20004533155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34398.

The product of its (nonzero) digits is 9000, while the sum is 28.

The spelling of 20004533155 in words is "twenty billion, four million, five hundred thirty-three thousand, one hundred fifty-five".