664150642261050 has 96 divisors (see below), whose sum is σ = 1910488090793472. Its totient is φ = 149540101951680.

The previous prime is 664150642261049. The next prime is 664150642261163. The reversal of 664150642261050 is 50162246051466.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4720261152 + ... + 4720401851.

It is an arithmetic number, because the mean of its divisors is an integer number (19900917612432).

Almost surely, 2^{664150642261050} is an apocalyptic number.

664150642261050 is an abundant number, since it is smaller than the sum of its proper divisors (1246337448532422).

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

664150642261050 is a wasteful number, since it uses less digits than its factorization.

664150642261050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9440663092 (or 9440663087 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 664150642261050 in words is "six hundred sixty-four trillion, one hundred fifty billion, six hundred forty-two million, two hundred sixty-one thousand, fifty".