648498215079 has 96 divisors (see below), whose sum is σ = 1120330568448. Its totient is φ = 356285952000.

The previous prime is 648498215051. The next prime is 648498215143. The reversal of 648498215079 is 970512894846.

648498215079 is a `hidden beast` number, since 6 + 4 + 8 + 49 + 82 + 1 + 507 + 9 = 666.

It is not a de Polignac number, because 648498215079 - 2⁵ = 648498215047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648498215009) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 28530439 + ... + 28553159.

It is an arithmetic number, because the mean of its divisors is an integer number (11670110088).

Almost surely, 2^648498215079 is an apocalyptic number.

648498215079 is a deficient number, since it is larger than the sum of its proper divisors (471832353369).

648498215079 is a wasteful number, since it uses less digits than its factorization.

648498215079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23149 (or 23146 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 63.

The spelling of 648498215079 in words is "six hundred forty-eight billion, four hundred ninety-eight million, two hundred fifteen thousand, seventy-nine".