657226553445 has 144 divisors (see below), whose sum is σ = 1449031783680. Its totient is φ = 272495059200.

The previous prime is 657226553353. The next prime is 657226553447. The reversal of 657226553445 is 544355622756.

657226553445 is a `hidden beast` number, since 6 + 5 + 7 + 2 + 2 + 65 + 534 + 45 = 666.

It is not a de Polignac number, because 657226553445 - 2²⁴ = 657209776229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 657226553391 and 657226553400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (657226553447) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 10422471 + ... + 10485339.

It is an arithmetic number, because the mean of its divisors is an integer number (10062720720).

Almost surely, 2^657226553445 is an apocalyptic number.

It is an amenable number.

657226553445 is an abundant number, since it is smaller than the sum of its proper divisors (791805230235).

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

657226553445 is a wasteful number, since it uses less digits than its factorization.

657226553445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63336 (or 63326 counting only the distinct ones).

The product of its digits is 30240000, while the sum is 54.

The spelling of 657226553445 in words is "six hundred fifty-seven billion, two hundred twenty-six million, five hundred fifty-three thousand, four hundred forty-five".