20127457672 has 32 divisors (see below), whose sum is σ = 43774009920. Its totient is φ = 8497304640.

The previous prime is 20127457661. The next prime is 20127457687. The reversal of 20127457672 is 27675472102.

It is a super-2 number, since 2×20127457672² (a number of 21 digits) contains 22 as substring.

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, 2678479 + ... + 2685982.

It is an arithmetic number, because the mean of its divisors is an integer number (1367937810).

Almost surely, 2^20127457672 is an apocalyptic number.

It is an amenable number.

20127457672 is an abundant number, since it is smaller than the sum of its proper divisors (23646552248).

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

20127457672 is a wasteful number, since it uses less digits than its factorization.

20127457672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5364541 (or 5364537 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 43.

The spelling of 20127457672 in words is "twenty billion, one hundred twenty-seven million, four hundred fifty-seven thousand, six hundred seventy-two".