2640303640560 has 80 divisors (see below), whose sum is σ = 8276906985120. Its totient is φ = 696169943040.

The previous prime is 2640303640543. The next prime is 2640303640577. The reversal of 2640303640560 is 650463030462.

It is an interprime number because it is at equal distance from previous prime (2640303640543) and next prime (2640303640577).

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

It is a super-2 number, since 2×2640303640560² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61783501 + ... + 61826220.

It is an arithmetic number, because the mean of its divisors is an integer number (103461337314).

Almost surely, 2^{2640303640560} is an apocalyptic number.

2640303640560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2640303640560 is an abundant number, since it is smaller than the sum of its proper divisors (5636603344560).

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

2640303640560 is a wasteful number, since it uses less digits than its factorization.

2640303640560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123609826 (or 123609820 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 39.

The spelling of 2640303640560 in words is "two trillion, six hundred forty billion, three hundred three million, six hundred forty thousand, five hundred sixty".