20134740155 has 8 divisors (see below), whose sum is σ = 25212196512. Its totient is φ = 15407453248.

The previous prime is 20134740089. The next prime is 20134740161. The reversal of 20134740155 is 55104743102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20134740155 - 2⁸ = 20134739899 is a prime.

It is a super-2 number, since 2×20134740155² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87542234 + ... + 87542463.

It is an arithmetic number, because the mean of its divisors is an integer number (3151524564).

Almost surely, 2^20134740155 is an apocalyptic number.

20134740155 is a deficient number, since it is larger than the sum of its proper divisors (5077456357).

20134740155 is a wasteful number, since it uses less digits than its factorization.

20134740155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175084725.

The product of its (nonzero) digits is 16800, while the sum is 32.

The spelling of 20134740155 in words is "twenty billion, one hundred thirty-four million, seven hundred forty thousand, one hundred fifty-five".