20872137134 has 16 divisors (see below), whose sum is σ = 32083299072. Its totient is φ = 10178416248.

The previous prime is 20872137131. The next prime is 20872137149. The reversal of 20872137134 is 43173127802.

It is a super-2 number, since 2×20872137134² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20872137131) by changing a digit.

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, 118934 + ... + 236409.

It is an arithmetic number, because the mean of its divisors is an integer number (2005206192).

Almost surely, 2^20872137134 is an apocalyptic number.

20872137134 is a deficient number, since it is larger than the sum of its proper divisors (11211161938).

20872137134 is a wasteful number, since it uses less digits than its factorization.

20872137134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356071.

The product of its (nonzero) digits is 56448, while the sum is 38.

The spelling of 20872137134 in words is "twenty billion, eight hundred seventy-two million, one hundred thirty-seven thousand, one hundred thirty-four".