2640440680470 has 48 divisors (see below), whose sum is σ = 7226469235440. Its totient is φ = 667058697792.

The previous prime is 2640440680457. The next prime is 2640440680481. The reversal of 2640440680470 is 740860440462.

2640440680470 is a `hidden beast` number, since 2 + 64 + 0 + 4 + 40 + 6 + 80 + 470 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 772056969 + ... + 772060388.

It is an arithmetic number, because the mean of its divisors is an integer number (150551442405).

Almost surely, 2^{2640440680470} is an apocalyptic number.

2640440680470 is an abundant number, since it is smaller than the sum of its proper divisors (4586028554970).

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

2640440680470 is a wasteful number, since it uses less digits than its factorization.

2640440680470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544117389 (or 1544117386 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 45.

The spelling of 2640440680470 in words is "two trillion, six hundred forty billion, four hundred forty million, six hundred eighty thousand, four hundred seventy".