621090550141 has 2 divisors, whose sum is σ = 621090550142. Its totient is φ = 621090550140.

The previous prime is 621090550049. The next prime is 621090550177. The reversal of 621090550141 is 141055090126.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 361164940900 + 259925609241 = 600970^2 + 509829^2 .

It is a cyclic number.

It is not a de Polignac number, because 621090550141 - 2³⁵ = 586730811773 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 621090550097 and 621090550106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (621090551141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310545275070 + 310545275071.

It is an arithmetic number, because the mean of its divisors is an integer number (310545275071).

Almost surely, 2^621090550141 is an apocalyptic number.

It is an amenable number.

621090550141 is a deficient number, since it is larger than the sum of its proper divisors (1).

621090550141 is an equidigital number, since it uses as much as digits as its factorization.

621090550141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 34.

The spelling of 621090550141 in words is "six hundred twenty-one billion, ninety million, five hundred fifty thousand, one hundred forty-one".