140144637263321 has 2 divisors, whose sum is σ = 140144637263322. Its totient is φ = 140144637263320.

The previous prime is 140144637263221. The next prime is 140144637263347. The reversal of 140144637263321 is 123362736441041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130354396771225 + 9790240492096 = 11417285^2 + 3128936^2 .

It is a cyclic number.

It is not a de Polignac number, because 140144637263321 - 2²² = 140144633069017 is a prime.

It is not a weakly prime, because it can be changed into another prime (140144637263221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70072318631660 + 70072318631661.

It is an arithmetic number, because the mean of its divisors is an integer number (70072318631661).

Almost surely, 2^{140144637263321} is an apocalyptic number.

It is an amenable number.

140144637263321 is a deficient number, since it is larger than the sum of its proper divisors (1).

140144637263321 is an equidigital number, since it uses as much as digits as its factorization.

140144637263321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 47.

The spelling of 140144637263321 in words is "one hundred forty trillion, one hundred forty-four billion, six hundred thirty-seven million, two hundred sixty-three thousand, three hundred twenty-one".