648042865142 has 8 divisors (see below), whose sum is σ = 1023225576600. Its totient is φ = 306967672944.

The previous prime is 648042865139. The next prime is 648042865153. The reversal of 648042865142 is 241568240846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×648042865142² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8526879767 + ... + 8526879842.

It is an arithmetic number, because the mean of its divisors is an integer number (127903197075).

Almost surely, 2^648042865142 is an apocalyptic number.

648042865142 is a deficient number, since it is larger than the sum of its proper divisors (375182711458).

648042865142 is a wasteful number, since it uses less digits than its factorization.

648042865142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17053759630.

The product of its (nonzero) digits is 2949120, while the sum is 50.

The spelling of 648042865142 in words is "six hundred forty-eight billion, forty-two million, eight hundred sixty-five thousand, one hundred forty-two".