20240140278187 has 2 divisors, whose sum is σ = 20240140278188. Its totient is φ = 20240140278186.

The previous prime is 20240140278161. The next prime is 20240140278203. The reversal of 20240140278187 is 78187204104202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20240140278187 is a prime.

It is not a weakly prime, because it can be changed into another prime (20240240278187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10120070139093 + 10120070139094.

It is an arithmetic number, because the mean of its divisors is an integer number (10120070139094).

Almost surely, 2^{20240140278187} is an apocalyptic number.

20240140278187 is a deficient number, since it is larger than the sum of its proper divisors (1).

20240140278187 is an equidigital number, since it uses as much as digits as its factorization.

20240140278187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 401408, while the sum is 46.

The spelling of 20240140278187 in words is "twenty trillion, two hundred forty billion, one hundred forty million, two hundred seventy-eight thousand, one hundred eighty-seven".