648745522652 has 6 divisors (see below), whose sum is σ = 1135304664648. Its totient is φ = 324372761324.

The previous prime is 648745522619. The next prime is 648745522657. The reversal of 648745522652 is 256225547846.

It is a super-2 number, since 2×648745522652² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648745522657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81093190328 + ... + 81093190335.

It is an arithmetic number, because the mean of its divisors is an integer number (189217444108).

Almost surely, 2^648745522652 is an apocalyptic number.

It is an amenable number.

648745522652 is a deficient number, since it is larger than the sum of its proper divisors (486559141996).

648745522652 is a wasteful number, since it uses less digits than its factorization.

648745522652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162186380667 (or 162186380665 counting only the distinct ones).

The product of its digits is 32256000, while the sum is 56.

The spelling of 648745522652 in words is "six hundred forty-eight billion, seven hundred forty-five million, five hundred twenty-two thousand, six hundred fifty-two".