140128555877 has 2 divisors, whose sum is σ = 140128555878. Its totient is φ = 140128555876.

The previous prime is 140128555841. The next prime is 140128555913. The reversal of 140128555877 is 778555821041.

It is a balanced prime because it is at equal distance from previous prime (140128555841) and next prime (140128555913).

It can be written as a sum of positive squares in only one way, i.e., 135518960641 + 4609595236 = 368129^2 + 67894^2 .

It is a cyclic number.

It is not a de Polignac number, because 140128555877 - 2¹⁸ = 140128293733 is a prime.

It is a super-3 number, since 3×140128555877³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140128558877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70064277938 + 70064277939.

It is an arithmetic number, because the mean of its divisors is an integer number (70064277939).

Almost surely, 2^140128555877 is an apocalyptic number.

It is an amenable number.

140128555877 is a deficient number, since it is larger than the sum of its proper divisors (1).

140128555877 is an equidigital number, since it uses as much as digits as its factorization.

140128555877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136000, while the sum is 53.

The spelling of 140128555877 in words is "one hundred forty billion, one hundred twenty-eight million, five hundred fifty-five thousand, eight hundred seventy-seven".