20548015467664 has 40 divisors (see below), whose sum is σ = 40317532112000. Its totient is φ = 10143502701696.

The previous prime is 20548015467601. The next prime is 20548015467697. The reversal of 20548015467664 is 46676451084502.

It is a junction number, because it is equal to n+sod(n) for n = 20548015467599 and 20548015467608.

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, 28794082 + ... + 29499070.

It is an arithmetic number, because the mean of its divisors is an integer number (1007938302800).

Almost surely, 2^{20548015467664} is an apocalyptic number.

It is an amenable number.

20548015467664 is a deficient number, since it is larger than the sum of its proper divisors (19769516644336).

20548015467664 is a wasteful number, since it uses less digits than its factorization.

20548015467664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728135 (or 728129 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 58.

The spelling of 20548015467664 in words is "twenty trillion, five hundred forty-eight billion, fifteen million, four hundred sixty-seven thousand, six hundred sixty-four".