650520423778 has 16 divisors (see below), whose sum is σ = 1018928626560. Its totient is φ = 310897624576.

The previous prime is 650520423767. The next prime is 650520423881. The reversal of 650520423778 is 877324025056.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4953550 + ... + 5083177.

It is an arithmetic number, because the mean of its divisors is an integer number (63683039160).

Almost surely, 2^650520423778 is an apocalyptic number.

650520423778 is a deficient number, since it is larger than the sum of its proper divisors (368408202782).

650520423778 is a wasteful number, since it uses less digits than its factorization.

650520423778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10038161.

The product of its (nonzero) digits is 2822400, while the sum is 49.

The spelling of 650520423778 in words is "six hundred fifty billion, five hundred twenty million, four hundred twenty-three thousand, seven hundred seventy-eight".