20176255140 has 96 divisors (see below), whose sum is σ = 58416153600. Its totient is φ = 5197824000.

The previous prime is 20176255117. The next prime is 20176255147. The reversal of 20176255140 is 4155267102.

It is not an unprimeable number, because it can be changed into a prime (20176255147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1108836 + ... + 1126884.

It is an arithmetic number, because the mean of its divisors is an integer number (608501600).

Almost surely, 2^20176255140 is an apocalyptic number.

20176255140 is a gapful number since it is divisible by the number (20) 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 20176255140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29208076800).

20176255140 is an abundant number, since it is smaller than the sum of its proper divisors (38239898460).

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

20176255140 is a wasteful number, since it uses less digits than its factorization.

20176255140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18693 (or 18691 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The spelling of 20176255140 in words is "twenty billion, one hundred seventy-six million, two hundred fifty-five thousand, one hundred forty".