2650688140464 has 1440 divisors, whose sum is σ = 10294887710016. Its totient is φ = 652138905600.

The previous prime is 2650688140433. The next prime is 2650688140543. The reversal of 2650688140464 is 4640418860562.

2650688140464 is a `hidden beast` number, since 2 + 6 + 5 + 0 + 68 + 81 + 40 + 464 = 666.

It is a super-2 number, since 2×2650688140464² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 2650688140464.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 6610194664 + ... + 6610195064.

Almost surely, 2^{2650688140464} is an apocalyptic number.

2650688140464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2650688140464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5147443855008).

2650688140464 is an abundant number, since it is smaller than the sum of its proper divisors (7644199569552).

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

2650688140464 is a wasteful number, since it uses less digits than its factorization.

2650688140464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625 (or 600 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 54.

The spelling of 2650688140464 in words is "two trillion, six hundred fifty billion, six hundred eighty-eight million, one hundred forty thousand, four hundred sixty-four".