648254553040 has 40 divisors (see below), whose sum is σ = 1542242816928. Its totient is φ = 253271544960.

The previous prime is 648254553017. The next prime is 648254553043. The reversal of 648254553040 is 40355452846.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648254553043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94219606 + ... + 94226485.

Almost surely, 2^648254553040 is an apocalyptic number.

It is an amenable number.

648254553040 is an abundant number, since it is smaller than the sum of its proper divisors (893988263888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648254553040 is a wasteful number, since it uses less digits than its factorization.

648254553040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188446147 (or 188446141 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 46.

The spelling of 648254553040 in words is "six hundred forty-eight billion, two hundred fifty-four million, five hundred fifty-three thousand, forty".