140451352551421 has 2 divisors, whose sum is σ = 140451352551422. Its totient is φ = 140451352551420.

The previous prime is 140451352551409. The next prime is 140451352551487. The reversal of 140451352551421 is 124155253154041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124627974416100 + 15823378135321 = 11163690^2 + 3977861^2 .

It is a cyclic number.

It is not a de Polignac number, because 140451352551421 - 2²¹ = 140451350454269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140451352551401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70225676275710 + 70225676275711.

It is an arithmetic number, because the mean of its divisors is an integer number (70225676275711).

Almost surely, 2^{140451352551421} is an apocalyptic number.

It is an amenable number.

140451352551421 is a deficient number, since it is larger than the sum of its proper divisors (1).

140451352551421 is an equidigital number, since it uses as much as digits as its factorization.

140451352551421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480000, while the sum is 43.

The spelling of 140451352551421 in words is "one hundred forty trillion, four hundred fifty-one billion, three hundred fifty-two million, five hundred fifty-one thousand, four hundred twenty-one".