5240643465 has 32 divisors (see below), whose sum is σ = 9164676096. Its totient is φ = 2545735680.

The previous prime is 5240643451. The next prime is 5240643521. The reversal of 5240643465 is 5643460425.

It is not a de Polignac number, because 5240643465 - 2⁵ = 5240643433 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 323572 + ... + 339381.

It is an arithmetic number, because the mean of its divisors is an integer number (286396128).

Almost surely, 2^5240643465 is an apocalyptic number.

It is an amenable number.

5240643465 is a deficient number, since it is larger than the sum of its proper divisors (3924032631).

5240643465 is a wasteful number, since it uses less digits than its factorization.

5240643465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663009.

The product of its (nonzero) digits is 345600, while the sum is 39.

The square root of 5240643465 is about 72392.2887122655. The cubic root of 5240643465 is about 1736.9802143400.

The spelling of 5240643465 in words is "five billion, two hundred forty million, six hundred forty-three thousand, four hundred sixty-five".