140666681480 has 32 divisors (see below), whose sum is σ = 340846191000. Its totient is φ = 51938466816.

The previous prime is 140666681473. The next prime is 140666681483. The reversal of 140666681480 is 84186666041.

It can be written as a sum of positive squares in 4 ways, for example, as 79972446436 + 60694235044 = 282794^2 + 246362^2 .

It is not an unprimeable number, because it can be changed into a prime (140666681483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135255905 + ... + 135256944.

Almost surely, 2^140666681480 is an apocalyptic number.

140666681480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140666681480 is an abundant number, since it is smaller than the sum of its proper divisors (200179509520).

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

140666681480 is a wasteful number, since it uses less digits than its factorization.

140666681480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270512873 (or 270512869 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 50.

The spelling of 140666681480 in words is "one hundred forty billion, six hundred sixty-six million, six hundred eighty-one thousand, four hundred eighty".