21147876505080 has 192 divisors, whose sum is σ = 76405231768320. Its totient is φ = 5037707520000.

The previous prime is 21147876505073. The next prime is 21147876505103. The reversal of 21147876505080 is 8050567874112.

21147876505080 is a `hidden beast` number, since 2 + 1 + 1 + 4 + 7 + 87 + 6 + 50 + 508 + 0 = 666.

It is a super-2 number, since 2×21147876505080² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 72738421 + ... + 73028580.

It is an arithmetic number, because the mean of its divisors is an integer number (397943915460).

Almost surely, 2^{21147876505080} is an apocalyptic number.

21147876505080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21147876505080 is an abundant number, since it is smaller than the sum of its proper divisors (55257355263240).

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

21147876505080 is a wasteful number, since it uses less digits than its factorization.

21147876505080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145767062 (or 145767055 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 54.

The spelling of 21147876505080 in words is "twenty-one trillion, one hundred forty-seven billion, eight hundred seventy-six million, five hundred five thousand, eighty".