4626646646640 has 80 divisors (see below), whose sum is σ = 14484610666656. Its totient is φ = 1221556864000.

The previous prime is 4626646646569. The next prime is 4626646646641. The reversal of 4626646646640 is 466466466264.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4626646646641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95409891 + ... + 95458370.

Almost surely, 2^{4626646646640} is an apocalyptic number.

4626646646640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4626646646640 is an abundant number, since it is smaller than the sum of its proper divisors (9857964020016).

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

4626646646640 is a wasteful number, since it uses less digits than its factorization.

4626646646640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190868378 (or 190868372 counting only the distinct ones).

The product of its (nonzero) digits is 143327232, while the sum is 60.

The spelling of 4626646646640 in words is "four trillion, six hundred twenty-six billion, six hundred forty-six million, six hundred forty-six thousand, six hundred forty".