13557448973 has 16 divisors (see below), whose sum is σ = 13986772800. Its totient is φ = 13133715840.

The previous prime is 13557448939. The next prime is 13557448981. The reversal of 13557448973 is 37984475531.

It is a cyclic number.

It is not a de Polignac number, because 13557448973 - 2⁶ = 13557448909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13557441973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3181118 + ... + 3185376.

It is an arithmetic number, because the mean of its divisors is an integer number (874173300).

Almost surely, 2^13557448973 is an apocalyptic number.

It is an amenable number.

13557448973 is a deficient number, since it is larger than the sum of its proper divisors (429323827).

13557448973 is a wasteful number, since it uses less digits than its factorization.

13557448973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4892.

The product of its digits is 12700800, while the sum is 56.

The spelling of 13557448973 in words is "thirteen billion, five hundred fifty-seven million, four hundred forty-eight thousand, nine hundred seventy-three".