645110054463 has 16 divisors (see below), whose sum is σ = 983111795456. Its totient is φ = 368601710400.

The previous prime is 645110054447. The next prime is 645110054473. The reversal of 645110054463 is 364450011546.

It is not a de Polignac number, because 645110054463 - 2⁴ = 645110054447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645110054423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1114513 + ... + 1591338.

It is an arithmetic number, because the mean of its divisors is an integer number (61444487216).

Almost surely, 2^645110054463 is an apocalyptic number.

645110054463 is a deficient number, since it is larger than the sum of its proper divisors (338001740993).

645110054463 is a wasteful number, since it uses less digits than its factorization.

645110054463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2717214.

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 645110054463 in words is "six hundred forty-five billion, one hundred ten million, fifty-four thousand, four hundred sixty-three".