2147640423288 has 64 divisors (see below), whose sum is σ = 5422774556160. Its totient is φ = 708727641216.

The previous prime is 2147640423287. The next prime is 2147640423293. The reversal of 2147640423288 is 8823240467412.

It is a Cunningham number, because it is equal to 1465483²-1.

It is a super-2 number, since 2×2147640423288² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2147640423288.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2147640423281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8670781 + ... + 8915027.

It is an arithmetic number, because the mean of its divisors is an integer number (84730852440).

Almost surely, 2^{2147640423288} is an apocalyptic number.

It is an amenable number.

2147640423288 is an abundant number, since it is smaller than the sum of its proper divisors (3275134132872).

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

2147640423288 is a wasteful number, since it uses less digits than its factorization.

2147640423288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247916 (or 247912 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 51.

The spelling of 2147640423288 in words is "two trillion, one hundred forty-seven billion, six hundred forty million, four hundred twenty-three thousand, two hundred eighty-eight".