2140688753540 has 24 divisors (see below), whose sum is σ = 4514740153560. Its totient is φ = 852600497408.

The previous prime is 2140688753519. The next prime is 2140688753549. The reversal of 2140688753540 is 453578860412.

It can be written as a sum of positive squares in 4 ways, for example, as 308060521024 + 1832628232516 = 555032^2 + 1353746^2 .

It is not an unprimeable number, because it can be changed into a prime (2140688753549) 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, 229682975 + ... + 229692294.

It is an arithmetic number, because the mean of its divisors is an integer number (188114173065).

Almost surely, 2^{2140688753540} is an apocalyptic number.

2140688753540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2140688753540 is an abundant number, since it is smaller than the sum of its proper divisors (2374051400020).

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

2140688753540 is a wasteful number, since it uses less digits than its factorization.

2140688753540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459375511 (or 459375509 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 53.

The spelling of 2140688753540 in words is "two trillion, one hundred forty billion, six hundred eighty-eight million, seven hundred fifty-three thousand, five hundred forty".