20116234551531 has 8 divisors (see below), whose sum is σ = 26821752814080. Its totient is φ = 13410769661672.

The previous prime is 20116234551503. The next prime is 20116234551533. The reversal of 20116234551531 is 13515543261102.

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 20116234551531 - 2²⁹ = 20115697680619 is a prime.

It is a super-2 number, since 2×20116234551531² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20116234551531.

It is not an unprimeable number, because it can be changed into a prime (20116234551533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12455295 + ... + 13977368.

It is an arithmetic number, because the mean of its divisors is an integer number (3352719101760).

Almost surely, 2^{20116234551531} is an apocalyptic number.

20116234551531 is a deficient number, since it is larger than the sum of its proper divisors (6705518262549).

20116234551531 is a wasteful number, since it uses less digits than its factorization.

20116234551531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26686345.

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 20116234551531 in words is "twenty trillion, one hundred sixteen billion, two hundred thirty-four million, five hundred fifty-one thousand, five hundred thirty-one".