144565663550 has 144 divisors (see below), whose sum is σ = 338629576320. Its totient is φ = 44946369600.

The previous prime is 144565663547. The next prime is 144565663573. The reversal of 144565663550 is 55366565441.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a Curzon number.

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, 17740577 + ... + 17748723.

It is an arithmetic number, because the mean of its divisors is an integer number (2351594280).

Almost surely, 2^144565663550 is an apocalyptic number.

144565663550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144565663550 is an abundant number, since it is smaller than the sum of its proper divisors (194063912770).

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

144565663550 is a wasteful number, since it uses less digits than its factorization.

144565663550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8607 (or 8591 counting only the distinct ones).

The product of its (nonzero) digits is 6480000, while the sum is 50.

The spelling of 144565663550 in words is "one hundred forty-four billion, five hundred sixty-five million, six hundred sixty-three thousand, five hundred fifty".