650406642550 has 72 divisors (see below), whose sum is σ = 1407495015000. Its totient is φ = 222960528000.

The previous prime is 650406642533. The next prime is 650406642601. The reversal of 650406642550 is 55246604056.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 650406642497 and 650406642506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18354850 + ... + 18390250.

It is an arithmetic number, because the mean of its divisors is an integer number (19548541875).

Almost surely, 2^650406642550 is an apocalyptic number.

650406642550 is an abundant number, since it is smaller than the sum of its proper divisors (757088372450).

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

650406642550 is a wasteful number, since it uses less digits than its factorization.

650406642550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42926 (or 42914 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 650406642550 in words is "six hundred fifty billion, four hundred six million, six hundred forty-two thousand, five hundred fifty".