64620240042260 has 24 divisors (see below), whose sum is σ = 155088576101760. Its totient is φ = 22155510871584.

The previous prime is 64620240042251. The next prime is 64620240042271. The reversal of 64620240042260 is 6224004202646.

It is a super-3 number, since 3×64620240042260³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

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, 230786571440 + ... + 230786571719.

It is an arithmetic number, because the mean of its divisors is an integer number (6462024004240).

Almost surely, 2^{64620240042260} is an apocalyptic number.

It is an amenable number.

64620240042260 is an abundant number, since it is smaller than the sum of its proper divisors (90468336059500).

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

64620240042260 is a wasteful number, since it uses less digits than its factorization.

64620240042260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461573143175 (or 461573143173 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 38.

The spelling of 64620240042260 in words is "sixty-four trillion, six hundred twenty billion, two hundred forty million, forty-two thousand, two hundred sixty".