140649144491520 has 640 divisors, whose sum is σ = 579490603084800. Its totient is φ = 31668542078976.

The previous prime is 140649144491437. The next prime is 140649144491683. The reversal of 140649144491520 is 25194441946041.

It is a happy number.

140649144491520 is a `hidden beast` number, since 1 + 4 + 0 + 6 + 4 + 9 + 144 + 491 + 5 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30247926 + ... + 34586634.

It is an arithmetic number, because the mean of its divisors is an integer number (905454067320).

Almost surely, 2^{140649144491520} is an apocalyptic number.

140649144491520 is a gapful number since it is divisible by the number (10) 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 140649144491520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289745301542400).

140649144491520 is an abundant number, since it is smaller than the sum of its proper divisors (438841458593280).

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

140649144491520 is an equidigital number, since it uses as much as digits as its factorization.

140649144491520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4338815 (or 4338793 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 140649144491520 in words is "one hundred forty trillion, six hundred forty-nine billion, one hundred forty-four million, four hundred ninety-one thousand, five hundred twenty".