655446700701640 has 32 divisors (see below), whose sum is σ = 1486367321287680. Its totient is φ = 260114281221312.

The previous prime is 655446700701619. The next prime is 655446700701647. The reversal of 655446700701640 is 46107007644556.

It is a super-2 number, since 2×655446700701640² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (655446700701647) 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, 64512465462 + ... + 64512475621.

It is an arithmetic number, because the mean of its divisors is an integer number (46448978790240).

Almost surely, 2^{655446700701640} is an apocalyptic number.

It is an amenable number.

655446700701640 is an abundant number, since it is smaller than the sum of its proper divisors (830920620586040).

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

655446700701640 is a wasteful number, since it uses less digits than its factorization.

655446700701640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129024941221 (or 129024941217 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 55.

The spelling of 655446700701640 in words is "six hundred fifty-five trillion, four hundred forty-six billion, seven hundred million, seven hundred one thousand, six hundred forty".