21007557527000 has 64 divisors (see below), whose sum is σ = 53626565060640. Its totient is φ = 7639111824000.

The previous prime is 21007557526937. The next prime is 21007557527051. The reversal of 21007557527000 is 72575570012.

It is a super-4 number, since 4×21007557527000⁴ (a number of 54 digits) contains 4444 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 (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 954877979 + ... + 954899978.

Almost surely, 2^{21007557527000} is an apocalyptic number.

21007557527000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21007557527000 is an abundant number, since it is smaller than the sum of its proper divisors (32619007533640).

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

21007557527000 is a wasteful number, since it uses less digits than its factorization.

21007557527000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909777989 (or 1909777975 counting only the distinct ones).

The product of its (nonzero) digits is 171500, while the sum is 41.

The spelling of 21007557527000 in words is "twenty-one trillion, seven billion, five hundred fifty-seven million, five hundred twenty-seven thousand".