650406688080 has 80 divisors (see below), whose sum is σ = 2016836640384. Its totient is φ = 173392243200.

The previous prime is 650406688049. The next prime is 650406688081. The reversal of 650406688080 is 80886604056.

650406688080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650406688081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 458805 + ... + 1229355.

Almost surely, 2^650406688080 is an apocalyptic number.

650406688080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

650406688080 is an abundant number, since it is smaller than the sum of its proper divisors (1366429952304).

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

650406688080 is a wasteful number, since it uses less digits than its factorization.

650406688080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774084 (or 774078 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 51.

The spelling of 650406688080 in words is "six hundred fifty billion, four hundred six million, six hundred eighty-eight thousand, eighty".