20532151866 has 16 divisors (see below), whose sum is σ = 41760309600. Its totient is φ = 6728049648.

The previous prime is 20532151859. The next prime is 20532151889. The reversal of 20532151866 is 66815123502.

20532151866 is a modest number, since divided by 151866 gives 20532 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28999861 + ... + 29000568.

It is an arithmetic number, because the mean of its divisors is an integer number (2610019350).

Almost surely, 2^20532151866 is an apocalyptic number.

20532151866 is an abundant number, since it is smaller than the sum of its proper divisors (21228157734).

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

20532151866 is a wasteful number, since it uses less digits than its factorization.

20532151866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58000493.

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 20532151866 in words is "twenty billion, five hundred thirty-two million, one hundred fifty-one thousand, eight hundred sixty-six".