653460122440 has 32 divisors (see below), whose sum is σ = 1480862880000. Its totient is φ = 259503585984.

The previous prime is 653460122407. The next prime is 653460122453. The reversal of 653460122440 is 44221064356.

It is a self number, because there is not a number n which added to its sum of digits gives 653460122440.

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, 58758840 + ... + 58769959.

It is an arithmetic number, because the mean of its divisors is an integer number (46276965000).

Almost surely, 2^653460122440 is an apocalyptic number.

It is an amenable number.

653460122440 is an abundant number, since it is smaller than the sum of its proper divisors (827402757560).

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

653460122440 is a wasteful number, since it uses less digits than its factorization.

653460122440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117528949 (or 117528945 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 653460122440 its reverse (44221064356), we get a palindrome (697681186796).

The spelling of 653460122440 in words is "six hundred fifty-three billion, four hundred sixty million, one hundred twenty-two thousand, four hundred forty".