20016545154012 has 144 divisors (see below), whose sum is σ = 56107523472000. Its totient is φ = 5965597123200.

The previous prime is 20016545153987. The next prime is 20016545154019. The reversal of 20016545154012 is 21045154561002.

20016545154012 is a `hidden beast` number, since 2 + 0 + 0 + 1 + 6 + 54 + 51 + 540 + 12 = 666.

It is a super-2 number, since 2×20016545154012² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20016545154019) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 287977239 + ... + 288046737.

Almost surely, 2^{20016545154012} is an apocalyptic number.

20016545154012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20016545154012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28053761736000).

20016545154012 is an abundant number, since it is smaller than the sum of its proper divisors (36090978317988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20016545154012 is a wasteful number, since it uses less digits than its factorization.

20016545154012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81504 (or 81499 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The spelling of 20016545154012 in words is "twenty trillion, sixteen billion, five hundred forty-five million, one hundred fifty-four thousand, twelve".