140521343305551 has 16 divisors (see below), whose sum is σ = 204205251444096. Its totient is φ = 85432809273696.

The previous prime is 140521343305543. The next prime is 140521343305571. The reversal of 140521343305551 is 155503343125041.

It is not a de Polignac number, because 140521343305551 - 2³ = 140521343305543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140521343305571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21705486925 + ... + 21705493398.

It is an arithmetic number, because the mean of its divisors is an integer number (12762828215256).

Almost surely, 2^{140521343305551} is an apocalyptic number.

140521343305551 is a deficient number, since it is larger than the sum of its proper divisors (63683908138545).

140521343305551 is a wasteful number, since it uses less digits than its factorization.

140521343305551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43410980422.

The product of its (nonzero) digits is 540000, while the sum is 42.

The spelling of 140521343305551 in words is "one hundred forty trillion, five hundred twenty-one billion, three hundred forty-three million, three hundred five thousand, five hundred fifty-one".