20754061146 has 96 divisors (see below), whose sum is σ = 55634761728. Its totient is φ = 5444858880.

The previous prime is 20754061123. The next prime is 20754061187. The reversal of 20754061146 is 64116045702.

20754061146 is a `hidden beast` number, since 207 + 5 + 406 + 1 + 1 + 46 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20754061146.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 279690 + ... + 346026.

It is an arithmetic number, because the mean of its divisors is an integer number (579528768).

Almost surely, 2^20754061146 is an apocalyptic number.

20754061146 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20754061146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27817380864).

20754061146 is an abundant number, since it is smaller than the sum of its proper divisors (34880700582).

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

20754061146 is a wasteful number, since it uses less digits than its factorization.

20754061146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66556 (or 66553 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 20754061146 in words is "twenty billion, seven hundred fifty-four million, sixty-one thousand, one hundred forty-six".