20424554672 has 10 divisors (see below), whose sum is σ = 39572574708. Its totient is φ = 10212277328.

The previous prime is 20424554663. The next prime is 20424554699. The reversal of 20424554672 is 27645542402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638267318 + ... + 638267349.

Almost surely, 2^20424554672 is an apocalyptic number.

It is an amenable number.

20424554672 is a deficient number, since it is larger than the sum of its proper divisors (19148020036).

20424554672 is a wasteful number, since it uses less digits than its factorization.

20424554672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276534675 (or 1276534669 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 41.

The spelling of 20424554672 in words is "twenty billion, four hundred twenty-four million, five hundred fifty-four thousand, six hundred seventy-two".