140666320650 has 96 divisors (see below), whose sum is σ = 379356523200. Its totient is φ = 34350289920.

The previous prime is 140666320589. The next prime is 140666320651. The reversal of 140666320650 is 56023666041.

It is a junction number, because it is equal to n+sod(n) for n = 140666320599 and 140666320608.

It is not an unprimeable number, because it can be changed into a prime (140666320651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 651100 + ... + 839799.

It is an arithmetic number, because the mean of its divisors is an integer number (3951630450).

Almost surely, 2^140666320650 is an apocalyptic number.

140666320650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140666320650 is an abundant number, since it is smaller than the sum of its proper divisors (238690202550).

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

140666320650 is a wasteful number, since it uses less digits than its factorization.

140666320650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490968 (or 1490963 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

Adding to 140666320650 its reverse (56023666041), we get a palindrome (196689986691).

The spelling of 140666320650 in words is "one hundred forty billion, six hundred sixty-six million, three hundred twenty thousand, six hundred fifty".