2640460206464 has 16 divisors (see below), whose sum is σ = 5260291817820. Its totient is φ = 1320230103168.

The previous prime is 2640460206413. The next prime is 2640460206469. The reversal of 2640460206464 is 4646020640462.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640460206469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10314297554 + ... + 10314297809.

Almost surely, 2^{2640460206464} is an apocalyptic number.

It is an amenable number.

2640460206464 is a deficient number, since it is larger than the sum of its proper divisors (2619831611356).

2640460206464 is an equidigital number, since it uses as much as digits as its factorization.

2640460206464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20628595377 (or 20628595365 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 44.

The spelling of 2640460206464 in words is "two trillion, six hundred forty billion, four hundred sixty million, two hundred six thousand, four hundred sixty-four".