654044640342 has 16 divisors (see below), whose sum is σ = 1308097629120. Its totient is φ = 218013488712.

The previous prime is 654044640307. The next prime is 654044640343. The reversal of 654044640342 is 243046440456.

It is a happy number.

It is a super-2 number, since 2×654044640342² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 654044640294 and 654044640303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654044640343) 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, 1201353 + ... + 1658715.

It is an arithmetic number, because the mean of its divisors is an integer number (81756101820).

Almost surely, 2^654044640342 is an apocalyptic number.

654044640342 is an abundant number, since it is smaller than the sum of its proper divisors (654052988778).

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

654044640342 is a wasteful number, since it uses less digits than its factorization.

654044640342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695707.

The product of its (nonzero) digits is 1105920, while the sum is 42.

The spelling of 654044640342 in words is "six hundred fifty-four billion, forty-four million, six hundred forty thousand, three hundred forty-two".