648937234065 has 32 divisors (see below), whose sum is σ = 1046177525376. Its totient is φ = 343483176960.

The previous prime is 648937234063. The next prime is 648937234117. The reversal of 648937234065 is 560432739846.

It is not a de Polignac number, because 648937234065 - 2¹ = 648937234063 is a prime.

It is a super-2 number, since 2×648937234065² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 648937233996 and 648937234014.

It is not an unprimeable number, because it can be changed into a prime (648937234063) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 826827 + ... + 1407663.

It is an arithmetic number, because the mean of its divisors is an integer number (32693047668).

Almost surely, 2^648937234065 is an apocalyptic number.

It is an amenable number.

648937234065 is a deficient number, since it is larger than the sum of its proper divisors (397240291311).

648937234065 is a wasteful number, since it uses less digits than its factorization.

648937234065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581409.

The product of its (nonzero) digits is 26127360, while the sum is 57.

The spelling of 648937234065 in words is "six hundred forty-eight billion, nine hundred thirty-seven million, two hundred thirty-four thousand, sixty-five".