140891321749 has 2 divisors, whose sum is σ = 140891321750. Its totient is φ = 140891321748.

The previous prime is 140891321729. The next prime is 140891321771. The reversal of 140891321749 is 947123198041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134830699249 + 6060622500 = 367193^2 + 77850^2 .

It is a cyclic number.

It is not a de Polignac number, because 140891321749 - 2¹⁷ = 140891190677 is a prime.

It is a super-3 number, since 3×140891321749³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140891321729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70445660874 + 70445660875.

It is an arithmetic number, because the mean of its divisors is an integer number (70445660875).

Almost surely, 2^140891321749 is an apocalyptic number.

It is an amenable number.

140891321749 is a deficient number, since it is larger than the sum of its proper divisors (1).

140891321749 is an equidigital number, since it uses as much as digits as its factorization.

140891321749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 140891321749 in words is "one hundred forty billion, eight hundred ninety-one million, three hundred twenty-one thousand, seven hundred forty-nine".