20727132575 has 24 divisors (see below), whose sum is σ = 25822156800. Its totient is φ = 16504155360.

The previous prime is 20727132557. The next prime is 20727132589. The reversal of 20727132575 is 57523172702.

It is a happy number.

It is not a de Polignac number, because 20727132575 - 2²⁰ = 20726083999 is a prime.

It is a super-2 number, since 2×20727132575² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5079386 + ... + 5083464.

It is an arithmetic number, because the mean of its divisors is an integer number (1075923200).

Almost surely, 2^20727132575 is an apocalyptic number.

20727132575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20727132575 is a deficient number, since it is larger than the sum of its proper divisors (5095024225).

20727132575 is a wasteful number, since it uses less digits than its factorization.

20727132575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4991 (or 4986 counting only the distinct ones).

The product of its (nonzero) digits is 205800, while the sum is 41.

The spelling of 20727132575 in words is "twenty billion, seven hundred twenty-seven million, one hundred thirty-two thousand, five hundred seventy-five".