20154631133 has 16 divisors (see below), whose sum is σ = 25333486080. Its totient is φ = 15607230336.

The previous prime is 20154631111. The next prime is 20154631171. The reversal of 20154631133 is 33113645102.

It is a cyclic number.

It is not a de Polignac number, because 20154631133 - 2¹⁶ = 20154565597 is a prime.

It is a super-2 number, since 2×20154631133² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20154631096 and 20154631105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20154631433) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2351888 + ... + 2360441.

It is an arithmetic number, because the mean of its divisors is an integer number (1583342880).

Almost surely, 2^20154631133 is an apocalyptic number.

It is an amenable number.

20154631133 is a deficient number, since it is larger than the sum of its proper divisors (5178854947).

20154631133 is a wasteful number, since it uses less digits than its factorization.

20154631133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4712396.

The product of its (nonzero) digits is 6480, while the sum is 29.

The spelling of 20154631133 in words is "twenty billion, one hundred fifty-four million, six hundred thirty-one thousand, one hundred thirty-three".