2002640664240 has 60 divisors (see below), whose sum is σ = 6725534899824. Its totient is φ = 534037510272.

The previous prime is 2002640664223. The next prime is 2002640664287. The reversal of 2002640664240 is 424660462002.

2002640664240 is a `hidden beast` number, since 2 + 0 + 0 + 2 + 6 + 4 + 0 + 6 + 642 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2002640664195 and 2002640664204.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1390721964 + ... + 1390723403.

Almost surely, 2^{2002640664240} is an apocalyptic number.

2002640664240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2002640664240 is an abundant number, since it is smaller than the sum of its proper divisors (4722894235584).

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

2002640664240 is a wasteful number, since it uses less digits than its factorization.

2002640664240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2781445386 (or 2781445377 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

The spelling of 2002640664240 in words is "two trillion, two billion, six hundred forty million, six hundred sixty-four thousand, two hundred forty".