648105392907 has 80 divisors (see below), whose sum is σ = 1179445273600. Its totient is φ = 346412401920.

The previous prime is 648105392899. The next prime is 648105392933. The reversal of 648105392907 is 709293501846.

648105392907 is a `hidden beast` number, since 6 + 4 + 8 + 10 + 539 + 2 + 90 + 7 = 666.

It is not a de Polignac number, because 648105392907 - 2³ = 648105392899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648105392947) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 470307 + ... + 1231827.

It is an arithmetic number, because the mean of its divisors is an integer number (14743065920).

It is a 1-persistent number, because it is pandigital, but 2⋅648105392907 = 1296210785814 is not.

Almost surely, 2^648105392907 is an apocalyptic number.

648105392907 is a deficient number, since it is larger than the sum of its proper divisors (531339880693).

648105392907 is a wasteful number, since it uses less digits than its factorization.

648105392907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761638 (or 761629 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 648105392907 in words is "six hundred forty-eight billion, one hundred five million, three hundred ninety-two thousand, nine hundred seven".