654204272440 has 32 divisors (see below), whose sum is σ = 1475282360880. Its totient is φ = 261090998272.

The previous prime is 654204272429. The next prime is 654204272441. The reversal of 654204272440 is 44272402456.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 654204272393 and 654204272402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654204272441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18441769 + ... + 18477208.

Almost surely, 2^654204272440 is an apocalyptic number.

It is an amenable number.

654204272440 is an abundant number, since it is smaller than the sum of its proper divisors (821078088440).

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

654204272440 is a wasteful number, since it uses less digits than its factorization.

654204272440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36919431 (or 36919427 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 40.

Adding to 654204272440 its reverse (44272402456), we get a palindrome (698476674896).

The spelling of 654204272440 in words is "six hundred fifty-four billion, two hundred four million, two hundred seventy-two thousand, four hundred forty".