650426941440 has 1152 divisors, whose sum is σ = 2558277736560. Its totient is φ = 157978460160.

The previous prime is 650426941379. The next prime is 650426941459. The reversal of 650426941440 is 44149624056.

650426941440 is a `hidden beast` number, since 6 + 504 + 2 + 6 + 94 + 14 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 20981514225 + ... + 20981514255.

Almost surely, 2^650426941440 is an apocalyptic number.

650426941440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 650426941440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1279138868280).

650426941440 is an abundant number, since it is smaller than the sum of its proper divisors (1907850795120).

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

650426941440 is an frugal number, since it uses more digits than its factorization.

650426941440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 650426941440 in words is "six hundred fifty billion, four hundred twenty-six million, nine hundred forty-one thousand, four hundred forty".